I can't help you with Planet CNC, I am using UCCNC and I am happy with that. Moved from Mach3 and I find it much better for my needs. Also milling a lot of PCB and on your machine I'd worry about that spindle. I had a similar before, but it was not performing very well.

BTW, I am also a hobbyist and I see the opposite, because it is a hobby, I have all the time in the world to spend time with setup or whatever. It is not my daily bread, so time is not an issue.