I have all those except for a couple (never did get Jaguar working, but it sucks anyway).
The only must-have that you're missing is Sega Model 2.

I started with Uncle T's guide that's stickied in the MALA forum and kept adding from there.
I'm sure I have over 100 hours in setting everything up.
I haven't played 90% of the console emulators beyond setting them up and making sure they work.
There are a couple sega genesis and atari 2600 games that I had as a kid and will play for 5 minutes or so before the nostalgia wears off.
The novelty of playing a gameboy game on a big screen wears off in about 20 seconds.
I'm not bothering with anything but arcade games on my next cab.