Short throw is awesome...I have one waiting myself (as well as bushings). Tranny mount and bushings and so on may not provide too much in the way of results considering how new your car is. Look into a Pitch Stop Mount for a decent upgrade.
You'll want to look into getting a protune with an upgraded intercooler so that you will yield the best benefits from it. Look into a ProcessWest, Spearco, TurboXS, and other name brands.
Any thoughts to suspension (swaybars and endlinks)?