imo i would start with rpm arms,aluminum bulk heads,big bore shocks,and a 2.4 radio system.then start a spare part box with some extra hinge pins,spur gear,assortment of bearings,and screw kit.im not saying this is all you need but its a great start and pending on how hard you drive you will know other parts you may need or want in reserve.with this set up you should be able to do some moderate bashing and be safe