I agree with Jones. If you have decided that one of the larger fractionals is the place for you, flying freight may be the fastest way to get where you need to go. You need multi-turbine time, so I don't see how moving to a freighter or even a regional would be a step backwards or even sideways. A regional may even be better because of your interaction with pax, which my guess is pretty important to a fractional. I'm sure your schedule (QOL) might not be up to your standards at either the freighter or the regional, but I'm talking long term. There's a twin out there somewhere with your name on it!

Take luck!