Next brushless/ lipo setup?

[RC-Monster Mike]

The 8L will be a rocketship in that lightweight beast. Not too hot for it, either. I think the 9L would still be a better choice, as it gets better runtimes. For a truck that light, I think I would even use a Lehner basic xl2800 or a 1930/8 motor for it(lighter, longer runtime and plenty of power). You should have no trouble with the Lipos you mentioned. It looks like your front camber could use some adjustment there, my friend! :)
Nice truck.