A few things that don't seem to make sense to me.
1. If you are going to be moving back east anyway it seems like the expensive Denver rent will soon be going away regardless.
2. Another type rating is not a negative for moving on, it's a positive.
3. Starting at the bottom again starts you at the bottom of another FO Payscale.
This seems to come down to a decision about selling your current seniority for $27K and a new type rating. So how bad do you need the money, now, how much of a salary hit will you take, and what's the difference in time it will take you - right now today - to upgrade at each regional?