If you're only going to have 5 balls I would have a mix of pearls and solids as well as symmetric with asymmetric cores to give you different breakpoint shapes. Depending on what lane conditions you're going to face, I don't think it's necessary to have to shell down to anything like a tropical or plastic to face 'desert' conditions. Look at J. Carter, he doesn't carry anything weaker than a JOLT pearl in his arsenal. You're better off sticking to higher performance stuff and moving on the lane and changing hand position. That's just my opinion.
I'd line this up:
Dimension
Attitude Shift (or some other solid with a MB)
Gravity Shift
Rapid Fire Pearl
Street Rod Pearl
Basically, I would try to have at least a couple solids as well as a couple asymmetric options. I think something like this would give you substantially different looks as far as breakpoint shapes are concerned. Or, if you match up well with a couple certain cores, get the solid and pearl version of each and then add one ball that gives you a different needed look.
