BTW, what do most people do after they create a project they want to keep? Would I just order something like a Mini and swap it out for the Duemilanove so I can keep it for prototyping?
You could - another option would be to build a "standalone" Arduino (esentially the bare minimum needed for your application, using the ATMega, plus other external components - but you would need an AVR ISP programmer to set it up - which could be done with a regular Arduino, BTW).
