Hi,
Nice find! I also have a Gauntlet Legends cabinet. I paid $200Cdn for mine, it's in nice shape also, but came stripped (no monitor, no boards). Sounds like you scored!

- The issue with he control panel is the width it adds - you may not be able to get through standard-width doorways with it on. It's easy to take off though, so plan to remove it.
- As mentioned, the marquee just folds flat against the top of the cabinet, you'll need a Torx screwdriver or bit to lower it though. Not sure what size, I can check tonight if you want.
- I laid mine flat on it's back to bring it home, no issues. Of course mine was basically empty, so make sure the boards, etc. are all bolted tight before laying it down. If possible, vacuum out the bottom of the cabinet first so the black dust doesn't get all over the electronics when you tip it.
- It's VERY heavy! Mine had no monitor or boards, and the control panel off, and I still needed 3 guys to lift it down my staircase. Things were complicated by the fact that it barely fit around a 90 deg. corner in my stairs, but it made it.

I would say if you can strap it to a good furniture dolly you should be able to keep the monitor in so along as you have a strong guy on each side of it.
Regards,
Ken