Good luck on install and such. Typically the autos and manuals are pretty close at that power level. Great article comparing both back in 11.
http://www.mustangandfords.com/parts/mmfp-1010-2011-ford-mustang-gt-automatic-and-manual-sct-tuning/
I would say you are in the ballpark for sure. What octane are you running? Do you know how much timing your getting on avg at WOT?
I don't know. I'd have to datalog I guess. Once I install everything I'm going to datalog for Mike. My afr was spot on according to Jeff who was running the dyno and a known tuner.