Your minimum offset to fit on the TSX will ultimately depend on how low you have your car and your definition of "fit". Don't mean to sound racist, but often times you'll see a lot of cars owned by mexicans with crazy low offsets which means they stick out WAY beyond the bounds of the fender of the car.
Yes technically it works, but does it fit in my book? hardly.
OEM offset is +55. They say the furthest you can really go without having angle your wheels like crazy (aka Camber) is around +42 through +45. Anything lower than that is most likely going to rub with your fender.
It depends on how wide the wheel is. If you have 7.5" wheels then 35mm offset is fine. The lower the offset the further your tire will stick out.
7.5" with +35mm will sit about flush with the wheel well, it'll work out fine and shouldn't rub.
You have to go 5x114.3
To comment on the previous post. I prefer higher offset as well, but OEM offset is very conservative and wheels can be a lot wider/lower offset than that. The widest offset/wheel combo without modification is 8" with +38mm offset. You might get a little bit of rubbing with that so that's why I recommend going higher than that.