My MFA project file is currently 875MB and when I build the Windows executable (Direct3D9 in 2.5+ for shader compatibility) both the uncompressed and compressed .exe's are exactly 1GB in size. I only have some extensions, a handful of shaders and a couple TTF fonts that are built into the exe - no other binary data that the MFA itself wouldn't hold. I am using the "Optimize image size in RAM" option.
I know Fusion has a 2GB file size limit, so I'm concerned that I may hit that by the time I finish this project even though I'm optimizing like crazy with the power of 2 for images, etc. I'm trying to understand the jump in 125MB from MFA to EXE.