Take a little more time studying the posts and you will find the answer to your questions. I am pretty much a novice myself so my input is not concrete in any way shape or form. The motors you mention would probably work with plasma but I doubt they would perform good for routing. Mixing the two processes together is odd to me, but I know some try and some do it. To me sparks and fine (saw) dust are a disaster waiting to happen. I have seen posts where they claim to make the two into one machine and I think it is possible, but what is the time involved in switching over, fire precautions, and what not. A big consideration I would think. I am kind of shocked no one as pitched in yet to help with your questions. I, myself am more into the metal end of the machines but I do see a need arising for the potential of routing. All I can really only advise on from my stand point, it is to take a long look at your goals, possible ways of getting to them and reality, the part that sucks. Usually finances make us make our biggest (second) choices, and not always the correct ones. I was very fortunate in my path and looking back now, thinking to myself, I was just flat ass lucky. I will comment on two vendors you will not go wrong with, CandCNC and Hypertherm . Can't go wrong.