Don't know if there's a sanctioning body running the drag strip you're gonna be at--but most will NOT allow wheel adaptors (or spacers for that matter). Take em off if you're gonna run REAL slicks...
I'd also think of about some 80/20 shocks up front, and pump up the front tires to about 45-50lbs.
Practice on a practice tree! Don't know what your's or the TransAm guys experience are, but you can certainly pick up some time right off the bat!
Practice launches on the slicks--totally different then boiling street tires. If you're really worried about the rearend, I'd suggest Drag Radials so you can slip a little on takeoff.
Now--go get this guy!