That's actually not too bad! My Cobra was also only running mid 8's on crappy street tires... I had the same problem spinning in 1st and 2nd. It's still fun no matter what times you run! The more you get to know your car, and the track you'r running, your times will improve.
A set of good tires never hurts either... lol
*01 Cobra, 4.6L, P&P heads, Stage 3 comp cams, MAC LT headers, O/R Hpipe, Bassani catback exhaust, Too many bolt-ons to list..., 4.30 gears. (364 rwhp/ 330 rwtq)
*01 Roush Stage 2, 4.6L, 5 spd, BBK Bolt-ons (Wife's)
*71 Chevelle, 350, 4 spd, H/C/I, (~400 hp)
*72 C10, 350, Auto, (my Daily Driver)