5 Speed Gear ratio advice?

Let me say this, if I had the stash, it would be the 2.87 low with 3.91s minimum. If you check my sig, you'll see the ratios I am currently running, which is the best I've been able to come up with after five different factory combos. And I like it!
3.09-1.92-1.39-1.06-.78GVOD It has Splits of .62-.73-.78-.74od That 500 has a slightly wider 2-3 split and a slightly better od. It will be awesome! And it has potential for future growth with an SBM.