Another option to look into is EFI-Live. You are looking at about $600 or so for the autocal loaded with tunes (amount of tunes varies from tuner to tuner, but usually 3-4 tunes). You will want to add gauges anytime you modify an engine so for another $300 or so you can have a few gauges to monitor the vitals. There are quite a few good tuners out there that can get you set-up. Check http://www.anarchydieseltuning.com
to start. I hear nothing but good things from their tunes and they have been tuning EFI for years.