Saw that one on craigslist too. First thing I would do is check all the jamma boards to verify functionality since you have a functioning jamma setup as is.
Are you near Raleigh?
Anyhow, checked out the boards.
Toki works (checked before I bought it)
Surf Planet works (checked before I bought as well)
2nd Toki doesn't work, boots to a solid red screen and no sound. Static from the speaker though
Capcom Bowling boots up and sound works, video constantly scrolls
Crazy Bowl boots up and has sound, seems to be working
Robocop boots up, sound works but video is a static image after post and doesn't acknowledge coins or button presses
Golden Tee boots up and seems to work
The trackball doesn't seem to work, I'll look into that and try swapping in another trackball that I have tomorrow.