I just purchased a tamiya txt kit, it hasn't come in yet, but i need some information on any hop up or changes i should go with, right from the start. I was wondering if there are any weak parts about this kit that need to be addressed. Also, can someone please recommend a radio set up that works well with this truck. This truck will be for mostly backyard bashing and light rock crawling. Oh, should I make this kit 4 wheel steering? what are the advantages? Thank You!