My advice would be option #2. The problem with option 1 is that you risk having to pay everyone back if you can't finish or have some sort of family emergency pop up. Option 3 is risky because folks on this board are infamous for saying their interested and then disappearing when it comes time to put up the cash (e.g. Robbomaz supercharger kit, my spare Borbets, Marlin's skid plates, etc). Option #2 is best, but I would recommend you credit folks' donations against the sales price.