Hi,
I am not a machinist, but have built a lot of things over my 70+ years of inventing. I made an error and replied to an old thread this morning when addressing questions about the PM 940M CNC VS. Since I spent all of that time on that replied I will post a link to it here for you. It is a heavy machine and might work for you, but it is not a knee mill.
https://www.hobby-machinist.com/threads/pm-940-diy-cnc-or-turn-key-pm-940m-cnc-vs.72218/#post-679998 I was replying because some folks have replaced the n-motion controller and Mach3 software, but mine seems to work ok.
I have no real complaints about the PM support. Matt has been very responsive for me.
I also have an old South Bend 10 heavy lathe, which I have gotten a lot of work out of, but it is now the power cross feed is in need of some TLC. Sometimes I think I should replace it with modern PM lathe, but do not really like the idea of the work of moving more heavy equipment in and out of my tight spot.
By the way, PM shows no CNC mills listed in stock at this time (never does). However, Matt will probably order up one to build for you somewhat to your spec. When you purchase a CNC he removes the power feeds (horizontal and vertical) as well as the DRO (keeps the simple Quil DRO). The spindle gear selection changes to only two speed (Hi and Low), but the 3ph motor is now driven via the variable speed VFD. Also, the little electrical box on the back gets replaced with a much larger and heavier one containing all of the VS and CNC electronics. You can see a photo of my machine via the link posted in the above URL. Also, because of all of the changes, the machine is heavier than listed. Also, if you want to power tap you might want to ask him about a different VS motor and feedback. I do not think Mach3 provides for power tapping even if the motor was not VFD driven, but since I got a 4th axis option on my machine I am hoping I can someday make power tapping work with its stepper.
I have estimated the weight of some of the parts: Vertial head with 3 phase motor ~240-260#s without tooling, X-axis table well over 150# without the stepper attached (I had it apart at the ways and when I took mine off I could not man handle it by myself, and the CNC VS electrical box ~200#s.
Good luck.
Dave