Lightning stadium basher setup please help

lincpimp i was looking at your truck trying to figure out why it looked so diffrent from mine then i got it its the 10th scale lol I am doing the lightning stadium sport but used to own the stadium 10 very nice little truck it must fly with that setup using the top speed calc i found on this site looks like I am leaning towards the 7L seems to be the motor that will give me the most bang on 7 cells as well as have the ability to ocassionally run on 10 without grenading not necessarily geting a fiegao but somthing in that KV range

I could be all wrong though like i said i am looking for a motor that i can run either 7 or 10 cells on that will give melow to mid 30's on 7 cells and low to mid 40's on 10