Need help with E-LST2 gearing...

[JAILBIRD]

I'm just finishing up on an LST2 conversion and need a bit of help with the gearing. I'm running a CC2200kv/MMM combo with a 6s 5000mah 30C lipo. The spur is a 63t. I also have the TD collet hub and the Losi FOC. What would be a good pinion to start with? I'm not looking for absolute top speed, just a good ratio for bashing and showing up some nitros. Thanks for any help!!

-JB

Here's a quick pic.