If all goes well I'll be running 4wd with my Rango, but i'll make sure I bring my box of 'Rat spares just in case! It's a great little racer, and much maligned in the UK just because of the Ansmann name
I've run 8.5T in mine and it's been a really good way to get into the electric scene. Not so fast it gets you into major trouble, but quick enough to have a good race.