'74 Duster Floor pans

Hey guys,

I've been working on this car for awhile and I'm down to some hard cosmetics and body work. I know I can buy a brand new whole floor for about $500 with shipping. I can also buy the pieces separate and do it that way. Anybody have any suggestions or advice? Anybody done anything similar before?

It's automatic with a 318 for the curious. No advice is bad advice.