those links you listed dont include shipping , with shipping you looking at allready close to $400 dollars without tires and electronics . why not just look at the ones that are buy it now for under $800 , i even seen a brand new one for $750 thats is a better deal you get 2 matching batteries and all electronics unless you have your own electronics which it seems you dont have the right ones capable of pushing that size car . those tires you mentioned wont even fit on the axle adapters let alone be enough to have a drivable ride height .