Sounds like you had a blast. Seems a lot of different drivers grow some new respect for the Crossfire after seeing it in action. I usually have people at the track sneer at my car before the first session, after I get out there (and I'm no pro) and shake down the course with the SRT6, most of them are showing a whole new level of respect for the car. This always holds true for the Limited and Base models too.

Easy way to eliminate the seat slop is to do the seatbelt locking trick. Get the seat set where you want it then move it back an inch or two. Then tighten the lap portion of your belt, force yourself back in the seat and pull out on the shoulder part of your belt and let it snap back into the retractor. At this point it should be locked. Now move your seat back forward to your 'set' position. You should now be snug in your seat with the belt tight both across your lap and your upper torso. If it seems a bit constrictive... it was done correctly.

Hope that helps... Cheers!