Wasnt the turbo just rebuilt? Rebuilding would be another option for you. Everything is set up for that turbo, so it'll bolt straight up. And it'll have enough power for you. Lag may be a bit of an issue, mine doesnt reach full boost until 4000rpm, but there are always ways around that. Smaller exhaust housing, for example.
Just another option for you. Good to hear its almost ready to go!