If you're not still considering moving in the near future, I would just go big. If you're going to spend the bank and do it right, there won't be a huge difference between the 93 and 200 as far as equipment (a few more lights and powerheads), mostly just rock as you noted.
Maybe it's an opportunity for you to also do something awesome/creative and stick with the same rock you were going with before, and do some cool PVC/quickcrete/foam/netting project, or maybe make an iwagumi reef setup with lots of fish swimming room and room for corals to grow out.
Also, were you going to do "the package" for 90 gallons worth of critters, rock, and sand? I bet that you could easily get double the tank size filling out of whatever you order from TBS. And you can also just order some dry rock to fill in the gaps down the road if you feel like it.
I like 200g. That's my dream of where to go. One of the nicest tanks I've seen was a locals 210g tank before he went to a 375 (the 210 was probably 8-10 years old, beautifully grown in). You can also do a Tunze wavebox, which makes a standing wave, and looks fantastic in a longer tank. And you can have almost any size fish you want (including shoals of smaller fishes if desired).
