I'm surprised no one's mentioned the word lag with your turbo. A 6266 is a big turbo for a 2 liter. I guess you won't notice it as much at the moment as the standard engine is running a CR of 11.5:1 if I remember correctly. If you go forged and run the same compression ratio, you'd never be able to push the boost, which means you are limited to push the boundaries. You would have to drop the CR considerably to run high boost, and then your off boost torque disappears, which will make your car super laggy. If you intend on using it mainly as a drag car, then it would be the perfect setup, but as a road car, it would be near enough undriveable.
And to say that you can run 800BHP at 50psi, I'd be very wary taking such comments on board without fully understanding how it can be achieved. Certainly with your setup, this wouldn't be even close to possible, although you would still be able to make some good power.
Nice build so far and I hope you achieve your goals.