Looks like you will be limited to DCEN, scratch start, fixed current while
welding. The latter shouldn't be a problem for an experience TIG welder.
Could be a real problem if you are just starting out.

In general, you get what you pay for. Availability of repair parts and
labor could be a problem if anything goes wrong.

You will need a gas bottle and regulator. You ought to be able to cobble
together a water cooler torch setup if you feel you need it.

The duty cycle could be a problem depending on the current you will be
running.