I can't help with the logbook issues, but I think you may be being a bit over dramatic. It sounds like you have good experience and you are not too far from the next step in your career. It also sounds like you are willing to make a move to get to the regionals, so you could use that eagerness to find another king air operator for six months to a year. At a minimum do some instruction, survey, aerial photography, etc. to get yourself at least up to 1200 at which point you could do 135 freight.

I'm telling you this because I went through a similar route. I'm at FedEx now but it took a while. Patience, determination, reward. Do what you have to.