mbx5t conversion questions

[kneedeeppow]

hey there guys
i have just taken delivery a mbx5t chassis that i am starting a brushless conversion with.i plan to use a mmm v3 2200kv motor esc combo on 4s 5000mnh lipos with rcmonster mounts. what size/type of pinions should i use.i dont want super huge speeds,more looking for decent run times.