Need some advice or insight.

I am a 26 yo first officer at Republic Airlines. I recently was contacted by allegiant for an interview and don't know what to do.

Experience:
2100 TT
1600 turbine
250 turbine pic
All civilian
Bachelors with 3.0 GPA

I will probably at least do the interview and see what the have to say but I am happy at Republic and live in Florida and am MIA based. What should I do if I were offered a job? Wait for an upgrade or a legacy to call?

Also is there any way I'd get a FL base out of training?

What's the upgrade time?

What aircraft could I expect as a new hire? I really don't want to go there to fly the MD. I feel like I could wait it out for a legacy and do that.

Is it true that there's a bunch of day trips?

And is there any link or info on the new contract I am hearing about? Pay, qol, etc.

Also, would this be a good move to get to a legacy quicker?

Any feedback or info is much appreciated. Thanks ahead of time