Backpack sized off-roader?

Hi there everyone, getting back into RC again after a good period away from the fun!

I'm looking for something brushless which I can cycle with, on my back. I bought a Brushless E-Revo last year but due to the size of it, I had to cycle with a massive holdall bag on my side, which was just no use at all.

So something backpack sized, preferably brushless. Reccomendations? I was thinking along the lines of a Rustler or Mini E-Revo etc...

Edit: Forgot to mention, it will be used for light off-road duty, grass, gravel drifting fun and small-medium jumps.

Thanks,
Darren