Forestry ethanol is self-sustaining, and white wool into Pulverizer makes plenty of bone meal, with said white wool coming from golem-farmed cotton.Free bonemeal substitute from animal poop via sewage, fairly easy self sustaining power with the bio reactor, rocket launcher, long range lava gun (needle gun), and the awesomeness that is Red Net. It is easy to learn and extremely worth it.
I guess RedNet is about it from that list. High-tech weapons don't really fit in MF2, IMHO. The bow and wand are more appropriate, IMHO. Again, my opinion.