Good luck with build up mate, its an interesting concept, and quite challenging to get it right, I didn't
I only ever ran mine indoors, I reckon it'll work better outdoors tho.
I ended up with a chassis with the motor mounted on the left side to improve weight distribution, and with a thunder tiger geared diff in the stock BJ4 gearbox, that worked well, and I still have it if you interested
I also have a custom bodyshell a bit like this
