To put in my 2 pence, I used the DW20 pack and map from Ep 20. Plodded along for a while, set up the fermenter/still setup (powered by a biogas engine in a feedback loop) to generate fuel for the quarry until it hit the bottom. Let it be for quite a while before attaching it to a large underground iron tank (mainly to get rid of some saplings). When trying to work out what to do with it, I decided on a 36HP liquid boiler (because, hey, why not?). Got it set up, and a single fermenter/still was able to keep up reasonably well. Got annoyed with adding fertiliser, so bred bees to refined, plonked them in an alveary, refined the redulting oil and put in a holding tank, with the output going to the boiler.
This is now a fully automated, completely self-sustaining setup providing me with more than enough power for my entire base, and easy to add another boiler into the mix, should I wish to (the appropriate serums prepared for refined, fast, nocturnal, cave, flyer, and rock pollinating).
Also, tesseracts are awesome for this kind of thing!
Many thanks, I really like the bees, so that sounds pretty good, thanks