I'm running 367/50wt front and 289/45wt rear. I've played around with swaybars and the car seems to work best with the 1.2 mm bars front and rear. Buy a Kimbrough medium servo saver and don't run the car without it.
The car is very fast and very durable. I've only broken one steering bellcrank (hence the reason for the servo saver). I don't really know of any tricks to the build. It goes together very well and with alot fewer parts than most kits on the market. If you have any questions, please give me a call. I'd be happy to help you out. Sent you a PM.