And a bad mistake: I took 275 efficiency to mean 275 per plant. Nope, 55 per plant. So divide all the power totals I came up with by 5.
As for the laser drill, even with the right filters it only gives you redstone ore about 15% of the time. Short of setting up a fairly elaborate system that burns other ores along with pyrotheum, this makes using the laser drill as an energy positive source of rich slag unrealistic.
I have recently started with rotarycraft, it's pretty cool, maybe once I get a good boring machine up and running I'll have enough redstone ore to extend this plan.