If you're going to have EU (IC2) and MJ (BC) power, then here's what I would suggest.
Pulverizer- Better ore processing than macerator because it can give you extra ingots.
Induction Furnace- Fastest smelter in the game
Magma Crucible- Melts redstone for Redstone Energy Conduits to optimize your power
Liquid Transposer- Fill those Conduits
Extractor- Needed for IC2 recipes
Compressor- Need for IC2 recipes
Canning Machine- Not sure if implemented in 1.5 but will be needed for uranium in 1.6
Induction Smelter- Creates hardened glass for energy conduits
Mass Fabricator- create dat UU matter
Optional for other mods using MJ Power
Carpenter- Needed for many Forestry recipes
Centrifuge- Process Bee materials
Squeezer- Used to get liquids like seed oil, honey...
Fermenter- Get a production of Biomass going
Rolling Machine- Railcraft, needed for Iron Tanks
Any MFR machine- they run of MJ and can automate close to everything in the game.
Another plan if you have a load of power and no use for it, create an Applied Energistics Network to automate and process everything you own.