7XL Electric Savage

[captanabolic]

RJ
I have a similar project going on for my brother inlaw. A rebuilt savage. I am at the cross roads now of what battery esc motor combo. It has a brand new three speed in it so it has not been run yet. I used some kyosho battery trays mounted to the sides. I am wondering if a 4s 8xl w/9920 or Mamba Max will be enough to power it. I have a 13t mod1 pinion w/stock spur. Any Ideas or recommendations would be greatly appreciated. With that type of setup do you think 30-35 mph is possible? Top speed is not so much a factor as I want the truck to be fun for him.

Thanks,
The CAPT