you will have some say good about bassani and others say bad. for me i dislike bassani had it and got rid of it. you may want to lean towards the bbk long tube, dr gas x, and flowmasters. that is a combo proven to work great.
that puts you in the neighborhood of a 13.9-14.0 with stickier tires you can get those 60ft times down and see quicker times. good luck. practice, practice, practice is all i can say
you may want to post this question on www.modularmustangs.net there was a guy over there that just did this install with these cams. i had mine installed.
i would definitly upgrade the springs. i went with comp springs part #26113-16 that is with the xe278ah cam. your cam grind is going to be one step below that its xe270ah and these springs will work with yours also.
to answer your question on the cai, if you do that it would be a mod that you would remove when you get the s/c. i also live in georgia if you would like to see the benefits of a s/c
whatever you do dont get the 95 cobra rims. i have the chrome 2000's and like them, but i dont think they would be all that great looking with your body kit.