I have been looking into this for awhile now too. I have been studying the shit out of this and a common theme I see is people buying bigger machines within a year or so. Some lament that they wish they would have just spent the money for the bigger one in the first place. I am pretty much settled on the Maverick 4x8 https://lwmcnc.com/build-and-price-maverick-4x8-atc-pricing/ It's expensive but it is so capable with its three workstations. I would do some research on the competition in your local area to see what you're up against. If you've got a big shop nearby that has all the local business they might be a nightmare for you to go up against. Plasma tables are a lot cheaper and something to consider if you might like metal working as well. I am looking at https://www.langmuirsystems.com/xr With these two machines I could set up a sweet little business and get out of doing insurance construction work.