Stripper would have been the best way to go to get the car down to metal.. You might run into problems with now that the entire body has been SANDED down to metal. For instance, SURFACE RUST. If a your car is exposed to the elements after being sanded to metal rust will for very quickly.. Granted its just surface rust and not a big deal you will have to resand the entire car again, and again, until you at the very least get some sort of sealer on the car.
As far as not having money, You might want to figure out how to come up with some very fast or your car will become your worst nightmare. You will need tools (gun, compressor, ect.) and some sort of sealer or primer to seal the metal.
I am not trying to put a damper on your enthusiasem but you might want to research a bit more before diving into such a project.
IF and only IF the only route you have is Rattle Can Primer DO IT!!! it will at least seal the metal.. You can always go over it at a later date when you can get enough money together to do a proper job.