Doriyaa that pic is like gigantic bro.
BVM13, sup bro! Welcome to RC drifting. Anyways not exactly sure about a max offset wheel for your E10. I say the more the merrier. Hellaflush is where its at!
As fun as it is, you dont want to drive your car in the rain or anywhere wet. Yeah there is a such thing as water proof electronics but some things of your car aren't. Bearings will be shot. Think about it, there's basically 2 bearings for every rotating thing that sticks out. Water can get in your gearboxes and wash off the lube etc etc. A long time ago I drove my nitro sedan in the rain and it was the most fun I've ever had with an RC car. The water would hit the engine and the car would trail steam. It looked so kick ass.
Anyways, you might want to check out some of the more RC drift specific forums around the web. General forums tend to not be as specific when trying to find out something. CS Junkies and D1RC come to mind.
"It looks like a [insert car here]. It's just another [insert car here] clone!"
"Why did [insert manufacturer here] go with such a radical design? [insert manufacturer here] needs to stick with what works!" Shhhh, please.