Tekin for a Summit

[ticklechicken]

I'm going to get a RX8 for my Summit. I have a tall order of what I want it to do. I have other specialty RC cars, and now I'm trying to make a good all-around vehicle. I want the Summit to be equally good (not great) at crawling, mud-bogging, bashing, and going to the track. It will likely be geared for 30-35 mph. What system would be the best for this type of driving?

TT2360 4038 2250kv - Wye - 1Y
TT2361 4038 2000kv - Delta - 2D
TT2362 4038 1700kv - Delta - 2.5D
TT2363 4038 1550kv - Wye - 1.5Y
TT2364 4038 1350kv - Delta - 3D

My guess is to use a 2000kv on 4s. Would a 1550kv on 6s be too much power for crawling? I like to do really slow crawling.