Another thing...

Yes, you'll be able to jumpseat. But probably only on your days off. RSV days are very rarely commutable. You'll have 2-3 days off and if you have 3 off you'll commute in the night before and commute home on your first day off. Your days off will be half eaten by commuting.

What do you fly now? Is it turbine?

If you are building turbine M/E time I would strongly consider staying there until the right job comes along. Going 121 is important if the airlines are your goal, but right now is a very, very difficult time in the airlines. PIC turbine time is critical to your career and if you are building that right now and home every night that doesn't sound bad at all.