Will these fit? The 19 inch Iforge wheels are a 70mm offset with 295s and I am putting Champion springs on as well.

Will they rub?

are they 19x10 or 19x11 on the rear? factory 18x10 rears are 67 offset I believe.

19 x 11

you'll have 16mm less clearance on the inner side and the rim will extend outward 10mm

Outward 10mm you'll be fine, you can push the wheel outward by 15mm safely and I hear that it 18mm is fine too. I have 15mm spacers on all four of my wheels and I could still do 3 more mm in the rear.

The 16mm less inner clearance I am not sure- you'll have to measure under your car between inner rim lip and coilover to be sure.

Does anyone have this setup? Does anyone know about the inner clearance?

I dont know the offsets of mine but I run 18X11.5 in the rears