I have the PRO60120 with extended gantry and U axis.
My water table is 4’ x 8’. It’s stored under the machine on the cross members between the legs.
I use a 2 ton engine crane to move the water table. I can do it by myself, nobody else needed.
It takes a lot of time to remove the spoilboard and to put it back on. In fact, I have considered just cutting a hole in the spoilboard for the drain because without it, the ringing is considerable. Even if you bolt down the water table using the brackets.
I would get the same sized U axis as the Z axis. The script swaps the two axis when you switch over to plasma but Mach4 isn’t smart enough to to swap the soft limits and it causes problems.
Personally, every AvidCNC machine shipped should have the extended gantry and two axis. The dual process capability is priceless.
Another thing I would do is get a USB RS485 for your computer and the interface for your Hypertherm machine. It’s easy to add the ModBus control for current and if you have the time, the status codes and errors are also pretty cool. That gives you access to those features from within Mach4.
If you have the RS485 then you can try to add the Hypertherm “True Hole” function yourself. Jim Colt has explained it in many videos and online forums. For 2 years now that has been a project but I keep getting distracted with that dern tool carousel. True Hole is really needed so it’s a “sooner than later” thing.
Which by the way if you have ATC, the carousel is required to keep the tools out of the way while you drop that water table in the machine. Static tool posts get in the way. So it was this fact that started the fully retracting carousel project.
Google “Jim Colt True Hole” for more info on this…
EXTRA: Also, be advised that adding the U axis and the THC will eat the last of your ports on the ESS. After you install it, throw away the key to your case because you will have no room left in it. The capacitor for the extra axis will eat the space as well so keep that in mind.