I have done the exact same thing with a vert... jspecc TII, na harness, 550,750s... and I got the Rtek 2.0 just recently... for a basically stock setup it works great by helping fine tune things, monitor stock sensors, and gets rid of the need for a FCD. if getting a bigger turbo I would get a little nervous about not having a more powerful standalone though as you can't boost over 14 and I'd like the ability to use faster reacting sensors and remove the MAF.
It does do some pretty cool things though... fyi I have no emissions, hence the non CEL codes. but it datalogs fairly decent and accepts my wideband signal.