thanks all! yeah finally sorted out the monitor on one of the New Astro's (it's fantastic now), so the project list in getting shorter and shorter. Will do a video tour soon and some more pics.
picking up Space Harrier was years and years in the making, getting a switcher for the Rtype cab to easily switch between Rtype 1 and 2, that 1 player panel that Alberto1225 made is just insanely good. Eventually will put a TV on the wall with a rotating mount and attach the 360 I had in the Vewlix to that instead...
Room left for one more cab... top of the list would be Virtua Fighter 2, but its a total beast, likely not possible. Maybe sort out a Bubble Bobble or a dedicated (but smaller) Neo Geo again