What mod in RRR enables you to generate ores and other basic resources or at least mine them en masse?
That is, is there an expected early mod path/order?
I would probably look into ProgressiveAutomation then work towards an RFTools builder.
RFTools is an awesome mod in all stages of the game. Of course you'll need some kind of power source so a Big Reactor would probably be needed.
Other than that, I try to kind of tech up each mod as I need something from one. i.e jetpacks so i end up with ThermalExpansion machines.