^ Fly,
Having done a bunch of this, I can appreciate the difficulty in getting so much right, even including the spills. 
I haven't gone brushless, but probably will at some time, you don't really need it much for drifting.
Great fun is the understatement of the year, I would recommend it to anyone who has the time, and a ready supplier of spares. Particularly tyres on that surface! Ouch.
I have often walked past huge shops/warehouses part way through construction, and thought, just imagine the track you could build inside there. 
Regards,
