Mustang Cobra knockoff wheels on a Subie FTL........just my opinion, though. The offset on those wheels will be horribly wrong.
BTW, a full 6MT/R180 swap isn't going to save much if any weight over the stock auto, and why would you decrease the performance of your braking system by removing ABS? If it's not a track car, you're not going to be threshold braking, and ABS is far superior on a street car. I have yet to see a braking test where even a pro driver can outperform aBS on anything other than gravel or snow.
What brakes and suspension are you planning for this thing? If that's not part of your plan on a 3800 pound car with 400 hp, you need to seriously reconsider your priorities, and then you need to tackle the fact that STi Brembos may or may not bolt up.
Plus, why are you trying to lighten the car by stripping interior stuff, putting in racing shells, all that, if you want a GT/Luxury car? You're going to end up with something not much lighter, a lot louder, stiffer, etc.
I applaud you for trying, but if you're going whole-hog, you need to plan out the full suite of mods first, and be thinking about how you're going to control the power before you get it