First off welcome,
I have never owned a real arcade monitor, I do know that people go to great lengths save them. Real monitors arcade monitors are the gold standard to manny. Read
this to see why. There is a lot you can do to fix many issues, but I'll leave that for people that know better then me. If it does not have bad burn in I would keep the CRT even if I needed to recap it.
If the cab is original and works
(look here) I would try to restore it and as original as posable. You could put a Jamma switcher in it and switch between Mame and the original board. As Vendetta is a 4 player game any way adding one or two additional button per player will give let you play a lot more 4 player games with minimum alterations. If its a porly done conventions and it in bad shape keeping it original is less an issue.
I would look at
Groovy Mame It's made for use with arcade monitors. Hyper spin won't be an options, but
Attract mode may do for your tast.
There is also the
Arcade VGA that would let you use Windows and hyper spin.
Ether way I would buy a
J-pack as well. It will be a lot less work to set up you setup and it will protest your monitor from you accidentally sending the wrong signal.
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