Going to the track March 6!!

I'm going try to better my time this Saturday with the help of some M/T ET streets, and some skinnies, and whatever else is listed in my sig. The fastest my car has gone since I had it is 14.86 which was run by my friend. The fastest I have gone was the first time driving a stick on the track and this particular mustang too on the track was a 15.3. I think I can beat my friends time w/o the ET streets, but I'm curious how fast it can go with nothing more than some tires, 3.73s, Off-road h-pipe, and mufflers. Nothing has been done to the motor, just a rebuilt some 35K+ miles ago.

What tire pressure should I set the ET streets? I want to launch at 4500rpm , would that be alright considering I have don't anything done to the suspension or rear end? I only plan on making 2, maybe 3 passes and that's it. What other helpful hints could I get?

I plan on power shifting to get a good time. What time do you think I could get?