honestly id take there advice minimal gains would be netted for the amount you spent on tuning. i wouldnt get a tune yet unless you were really gonna stop there at only a turboback.
and rich is actually a nice guy just really really busy ive bought from them b4 and if you were ever sitting there normally he has a million questions being asked of him at one time.
its a high chance your not going to gain 25whp on your car on top of the stage2 map with those minimal mods.
if you have a question i guess try posting in the midwest forum they can help answer your questions and riftswrx might be able to answer your questions better if you have anymore.