I thought this was a question?
Bur in that case lemme comment on the 64 bit using a 32 bit program.
If you opt to use a 32 bit program on a 64 bit os, chances are you get POORER performance than when you run it on a 32 bit OS.
This is because the 64 bit system uses an abstraction layer to mimic the 32 bit system ,much like a virtual drive.
'S
So, unless you all use 64 bit programs , stick to the 32 bit OS,