If your speed calc is realistic (nice to know you're planning is based on that), I'd start with that. From what I've seen, most try to gear this up and with a some what heavy MT and this kv, it runs real hot. You can gear a lower kv up cause it has better torque, this was reason I went with 8XL by choice. Then I found out the feigaos just run hot ot hotter. You have to manage that. Heat issues go away when you step up to a better quality motor, but thats expected since they are 3x the price too.