Would i need to buy an fcd if i got an Corksport reprogrammed ecu? IT says it raises your fuel cut, but would it be a good idea to get one aswell?

I will be running a Corksport cat back, somekind of downpipe, midpipe, and a 3" TID, ported stock wastegate, stock turbo, MBC, and necessary fuel upgrades (i.e 720 primes, 950 seconds, and a walboro). I want to push around 10-12 psi with minimul to no creep at all. Is this possible, or is this a school boys dream?