Does your wife play, or show any signs of becoming a player with you once you get your house? If so, get one that you'll enjoy that also won't turn her off from pinball (this could have an effect on future purchases you desire to make) and this game may get much more plays from her than your Grand Prix or Rollergames. If she's a fan of the TWD show, awesome, but that game can be brutal at times. GOT is faster, but a bit easier to shoot... but the Pro looks like crap compared to TWD, so I'd consider the Castle Wall mod well after you're settled down to bring some life to that game.
If you can't get into MET Pro, definitely consider an Aero Pro. I thought it was going to s-u-c-k SUCK but I liked it and got over the old rock dude theme real quick. It was a blast to play on the one local, and it's great art with HD screen and "pretty colors". Women like pretty colors
I'd avoid GB like the plague. I played my 4th model last night (3 Pros & 1 Prem), and it was the same crap. Cheap outlane hops, and SDTM out of the pops. People are dropping like $100 in plastic mods just to get the game playable, and you have a wedding and house to pay for, so why spend $100 on plastics just to make your game playable? If your wife isn't a player, that game will be infuriating to her.
1) GOT or TWD
2) Aero or MET if you can play an Aero, or realize how great MET is.
3) ST (if you can find one)
4) Mustang (if you can find one)
17) See if you can wait for Star Wars