Don't know your background or your desires as far as your career is concerned but these could make this decision for me a lot different.
Having flown over 1000 hours as a PIC in a KA 90 I have to say I Really like that a/c, however if you are looking to have an airline career I wouldn't be going anywhere.
If however you are thinking of going corporate then it might be a good move. There are probably more 90's flying the skies than any other private turbine a/c. They have been making those things since the 60's. It's like the 172 of the turbine world.

It would definately be nice to have a schedule keeping you in the hometown most nights. That being said when things did turn around if you didn't like it you could take your turbine PIC and go back to the airlines I guess.
KA jobs are a major entry point for those looking to go corporate so I guess you need to think out the future choices you want to make in this career.

Good luck I know its never easy to switch jobs....unless you've just lost one