I've got one going with Golem's, Autonomous Activators. I have 16 Activators spaced in a 4x4 grid supplied by logistic pipes, 4 lumber golems (their range is very limited) and one collecting golem with a range upgrade.
Only a couple of minor issues, with only one tree of each type, you don't end up with a huge number of saplings, and getting 4 lumber golems is a bit of a pain.
I think that Rorax was doing something similar, but she had two activators, so I assume that one was placing and another was chopping somehow (I suspect either a TiC Broad Axe or Axe of the Stream) and then vacuum hoppers hoovering everything up.