Clat trac vs. SS springs vs 4 link

From what you want to do, the $$ you want to spend and the times you want to run, sounds like Cal-Tracs would be the best way to go. You can always sell them if you decide to get really serious down the road and convert to a four link setup. Besides, once you go to a four link, it's hard to go back to a more street-friendly suspension.