I'm enjoying the MFR tree farm. I put in all the piping to be self-sustaining. Sewer -> fertilizer, harvester ->planter, sludge boiler.
I think a simpler setup would be the SC tree farm. Even in the nerfed output and repair mechanism in 1.5.2, it is a lot easier to configure and maintain. You can stick a stack of iron in the repair slot and let it run for quite a while. It is self-fueling, so no need to add fuel.
The MFR tree farm can be maintenance free, but requires a lot of piping and other inputs and machines to let it run in a self-contained loop. Right now, I have 6 different pipe networks in order to run it all. AE and liquiducts will greatly simplify the piping needed to maintain it all, but I'm not quite there yet.