Installing the cabinets on top of the finished floor is the proper way. This allows for the finished counter height to be correct. Otherwise, the counter height from the finished floor would be off by the thickness of flooring materials, and if you ever decided to replace the counters you would have to build up the base of the new cabinets... That being said, You car rent a U-haul open trailer w/sides for about 20 bucks/day. If you know someone w/decent sized yard, you can just take it to their place to have a bon fire with.