Well... I have never tried this... but there may be a way to turn Pigawatts (energy from Sync) into RF? If so, you could make a pig powered base
As for the OP if you have the power converters mod installed, I would suggest just having RF/MJ as your main power production.
If you have Railcraft, have that make you a butt load of steam, use that to power either steam dynamos or steam engines and then, with a few of them, you will be generating a lot of power
I think I was running: MFR planter/harvester combo, pulverizer x6, redstone furnace x6, induction smelter, a few mekanism machines, an ME system, a rolling machine* and a few forestry machines* on about 10 of the top tier steam engines from railcraft... and I always had a surplus, as I kept filling energy cells.
*these machines needed constant power
Apparently, according to a few people, they believed that MJ cannot be converted into RF, but you can do it directly (without PCs) it's just a little awkward. You had to place the engine, then the conduit in front where the power would come out... which did take me a while to work out.