The traffic is all based on the United bank system. M-F the entire airport worth of planes arrives between 0700-0800, departs 0800-0840, arrives 1100-1200, departs 1200-1300, arrives 1530-1630, departs 1700-1830, arrives 2030-2100, and the last banks leaves around 2200-2300. Of course these times are rough, there will be smatterings of traffic outside of the normal bank hours, but this is roughly when the place gets jammed.
Leaving during a bank isn't so bad, they can push tin off the field pretty well. Arriving can be a bit more sporty as their airspace is somewhat hamstrung, and they get a LOT of dissimilar types whose speeds they have to coordinate.
If you can arrive between the banks, it's going to look more like a class D airport with LOTS of empty parking spots. It is an absolute ghost town.
I'll second Landmark. I've been there six times in the last two weeks. I've also been to Signature a couple of times - I like Landmark more. Both places get a fair share of piston singles, so they shouldn't have a problem handling you.
The controllers there are great, I've always had a very positive experience with the ATC around that area.