With the internals you are putting in, your power goals are going to be easy. I'm on a 100% stock longblock and stock "headers" and crossover, and have been making 400+ with e85 for a couple of years. Currently using a gt30 and 816cc injectors. With my daily driver.
I'd consider something a bit more in the turbo department - the 1000c injectors are going to have considerable headroom, and with more airflow you could be making 425-450 with that setup. Easily...
If your budget allows, bolt up an aftermarket header. If you go after more power, I'd go with a FMIC.