Neu Muggy conversion, need advice

[ilpufxit]

I've been looking for the best way to set up my LST2. I found a Muggy chassis and center diff on e-bay. All the LST2 stuff fits the Muggy and I think it will work awesome as a BL. I just bought a 1512 2.5D motor, I have a Quark 80b or a modded MM. I have lipos from 2s to 6s in any combination. What would be the best combination of voltage/gearing for a long running general basher? I'm looking for high torque, low speed, maybe 30-35mph. Mostly I'm after durability and reliability. Is this a good motor for this application? I bought it because I got a deal, not because it's the right one!