from what I read....
I don't think vegetariansoul will want to buy an existing cab and mod it to a mame cab....
you'll need to re-do the control panel.... (since from his requirement, its clear that he wants a 4 way, 2 SF style, and at least a tball....)
redoing just the panel top takes more than a few hrs....
assuming just cut, paint, wire..... you'll also need to get parts... (also paint takes time to dry...)
with no dis-respect... but from what I read, vegetariansoul doesn't sound like he wants to do much work on the cab.... but happy to pay the price as long as its within his budget....
he would do as much as putting together a pre-cut cab.... (as in erading instructions, put the pieces together and screw/glue it...) or simple things like hooking up connections.... but I don't think he wants to go into even simple drilling/wiring.... etc. (and modding cab requires that....)
I think if he's willing to spend $2500... that should be enough to get him a NEW cab with 2 SF layout, 4 way, spinner, tball, and a decent computer, and a 27 monitor.... and also a package that he doesn't need any more work than putting together a pre-made bookshelf (ikea style...) and simply hooking up the computer....
my $0.0002 cents...