WiX project :- how to reduce EXE(Bootstapper) size - winforms

Question

hi I have two MSI one for 86 bit and one for 64 bit and each MSI size is 60 MB so i want to create exe(Bootstrapper) with both MSI's with exe size 60-70 MB .
Issue:- Currently my exe(Bootstrapper ) size is 120 MB i want to reduce this to 60-70 MB with both Msi's
MY CODE
In Bootstrapper
<Chain>
<PackageGroupRef Id="NetFx451Web"/>
<ExePackage SourceFile="vstor_redist.exe" Vital="yes" Cache="yes" Compressed="no" Permanent="yes"
InstallCommand="/q /norestart"
RepairCommand="/q /norestart"
UninstallCommand="/q /norestart"
DetectCondition="VSTOR40"
/>
<ExePackage SourceFile="vcredist_x86.exe" Vital="yes" Cache="yes" Compressed="no" Permanent="yes"
DownloadUrl="http://downloads.mangoapps.com/pre/win/vcredist_x86.exe"
InstallCommand="/q /norestart"
RepairCommand="/q /norestart"
UninstallCommand="/q /norestart"
DetectCondition="VCREDIST2012"
/>
<MsiPackage Id="MSI64" SourceFile="$(var.WixMFW_PerMachine.ProjectDir)bin\64\Release\MFWSetup_x64.msi" InstallCondition="(VersionNT64)" DisplayInternalUI="no">
<MsiProperty Name="INSTALLFOLDER" Value="[InstallFolder]"/>
</MsiPackage>
<MsiPackage Id="MSI86" SourceFile="$(var.WixMFW_PerMachine.ProjectDir)bin\86\Release\MFWSetup_x86.msi" InstallCondition="(NOT VersionNT64)" DisplayInternalUI="no">
<MsiProperty Name="INSTALLFOLDER" Value="[InstallFolder]"/>
</MsiPackage>
</Chain>
IN MSI
<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi" xmlns:util="http://schemas.microsoft.com/wix/UtilExtension" xmlns:bal="http://schemas.microsoft.com/wix/BalExtension">
<Product Id="*" Name="Demo $(var.bitness)" Language="1033" Version="$(var.SetupVersionNumber)" Manufacturer="Demo " UpgradeCode="$(var.UpgradeCode)">
<Package InstallerVersion="200" Compressed="yes" InstallScope="perMachine" />
<CustomAction Id="DIRCA_TARGETDIR" Property="TARGETDIR" Value="[LocalAppDataFolder][Manufacturer]\[ProductName]" Execute="firstSequence" />
<MajorUpgrade DowngradeErrorMessage="A newer version of Demo For Windows is already installed." />
<Upgrade Id="$(var.UpgradeCode)">
<UpgradeVersion Maximum="$(var.SetupVersionNumber)" Property="OLDPRODUCTFOUND" OnlyDetect="no" IncludeMinimum="yes" IncludeMaximum="no" Language="1033" />
<UpgradeVersion Minimum="$(var.SetupVersionNumber)" Property="NEWPRODUCTFOUND" OnlyDetect="yes" IncludeMinimum="no" Language="1033" />
</Upgrade>
<?if $(var.Configuration) = ReleaseMSI ?>
<Media Id="1" Cabinet="Cab1.cab" EmbedCab="yes"></Media>
<?if $(var.Platform) = x64 ?>
<Media Id="2" Cabinet="Cab2.cab" EmbedCab="yes"></Media>
<?else ?>
<Media Id="3" Cabinet="Cab3.cab" EmbedCab="yes"></Media>
<?endif ?>
<?else?>
<Media Id="1" Cabinet="Cab1.cab" EmbedCab="no"></Media>
<?if $(var.Platform) = x64 ?>
<Media Id="2" Cabinet="Cab2.cab" EmbedCab="no"></Media>
<?else ?>
<Media Id="3" Cabinet="Cab3.cab" EmbedCab="no"></Media>
<?endif ?>
<?endif ?>
Feature
Directory
Component example
--
<Component Id="comp_F7B6C4FB_A2AD_493C_8081_8DAC3298503B" Guid="156DA224-3EC3-490C-8BE4-192E93883F44" Permanent="no" SharedDllRefCount="no" Transitive="no" Win64="$(var.Win64)" >
<File Id="_93649A69_3915_4B81_B0CB_B0AB2807E6E6" DiskId="1" Hidden="no" ReadOnly="no" TrueType="no" System="no" Vital="yes" Name="CefSharp.dll" Source="..\Utility\externalReferences\CefSharp.dll" KeyPath="yes" />
</Component>
---
Registrys
</Fragment>
</Wix>
But this is not working .. please help me.
All Files are comman in both x86 and x64 MSI the only different is
<?if $(var.Platform) = x64 ?>
<Component Id="SQLite" Win64="$(var.Win64)">
<File Id="SQLite.Interop" Source="$(var.ExternalReferences)\x64\SQLite.Interop.dll" KeyPath="yes" DiskId="2"/>
</Component>
<Component Id="System.Data.SQLitecomp" Win64="$(var.Win64)">
<File Id="System.Data.SQLite" Source="$(var.ExternalReferences)\x64\System.Data.SQLite.dll" KeyPath="yes" DiskId="2"/>
</Component>
<?else ?>
<Component Id="SQLite86" Win64="$(var.Win64)">
<File Id="SQLite.Interop" Source="$(var.ExternalReferences)\x86\SQLite.Interop.dll" KeyPath="yes" DiskId="3"/>
</Component>
<Component Id="System.Data.SQLitecomp" Win64="$(var.Win64)">
<File Id="System.Data.SQLite" Source="$(var.ExternalReferences)\x86\System.Data.SQLite.dll" KeyPath="yes" DiskId="3"/>
</Component>

Answer 1

Suggest creating three MSIs:
A common files MSI installing all of the common files to a platform
independent location such as CommonAppDataFolder.
A x64 platform MSI installing the 64 bit SQLLite files.
A x86 platform MSI installing the 32 bit SQLLite files.
You can then change your Bootstrapper to always install MSI #1 and either MSI #2 or MSI #3 depending on the platform. Because the common files are no longer duplicated, this should reduce the overall size of your Bootstrapper.
<Chain>
<PackageGroupRef Id="NetFx451Web"/>
<ExePackage SourceFile="vstor_redist.exe" Vital="yes" Cache="yes" Compressed="no" Permanent="yes"
InstallCommand="/q /norestart"
RepairCommand="/q /norestart"
UninstallCommand="/q /norestart"
DetectCondition="VSTOR40"
/>
<ExePackage SourceFile="vcredist_x86.exe" Vital="yes" Cache="yes" Compressed="no" Permanent="yes"
DownloadUrl="http://downloads.mangoapps.com/pre/win/vcredist_x86.exe"
InstallCommand="/q /norestart"
RepairCommand="/q /norestart"
UninstallCommand="/q /norestart"
DetectCondition="VCREDIST2012"
/>
<MsiPackage Id="MSICommon" SourceFile="$(var.WixMFW_PerMachine.ProjectDir)bin\Release\MFWSetup_common.msi" DisplayInternalUI="no">
<MsiProperty Name="INSTALLFOLDER" Value="[InstallFolder]"/>
</MsiPackage>
<MsiPackage Id="MSI64" SourceFile="$(var.WixMFW_PerMachine.ProjectDir)bin\64\Release\MFWSetup_x64.msi" InstallCondition="(VersionNT64)" DisplayInternalUI="no">
<MsiProperty Name="INSTALLFOLDER" Value="[InstallFolder]"/>
</MsiPackage>
<MsiPackage Id="MSI86" SourceFile="$(var.WixMFW_PerMachine.ProjectDir)bin\86\Release\MFWSetup_x86.msi" InstallCondition="(NOT VersionNT64)" DisplayInternalUI="no">
<MsiProperty Name="INSTALLFOLDER" Value="[InstallFolder]"/>
</MsiPackage>
</Chain>