What duty stations (besides Korea) can I reenlist to with 2 years left on my contract?

First, you cannot reenlist for a place if you are going to SFAB. You are reenlisting for whatever option you're reenlisting for tomorrow, that's it. Nothing is guaranteed past that.

Second, the answer to your question is none. Every CONUS duty assignment has a 2 year SRR from report date. Whatever CONUS assignment you receive after your tour in SFAB, you will be required to extend to meet that two year requirement. You will not be in your reenlistment window at that time, so you will have to work with your branch manager for your next duty assignment. There are other unaccompanied duty assignments besides Korea, but you will not likely be placed on one. If you are not tapped for a broadening assignment at the end of SFAB you should expect to be assigned to a BCT or something similar. If you choose not to extend you can sign a declination statement and ETS at another unit on Bragg.

A lot can change in 36 months CPL, so it is really too soon to give the advice you want now. You may not want to leave Bragg when the time comes, the Army can put you on assignment orders forcing your hand (re-up or extend to meet the SRR or sign a dec statement and probably be assigned there anyway), or you might just re-enlist. There are not many assignments that do not have a 3 year commitment, and you also need to account for the rank you will have in 3 years (probably SGT(P) or SSG depending upon your points).

I would not call it the "Last two years of your contract" but rather where would be a good duty station to start setting roots down next to? You will be at the mid way part of a potentially good career and will have options to really look at. With the SFAB experience I would ask for either Italy or a European assignment if you enjoyed the SFAB as you would be able to continue working with foreign partners.