Hi Beastman,
I'd be really cautious, cargo worldwide is taking a hammering.
A start up, using old uneconomical equipment, asking you for money for a type rating that's unlikely to be of any use to you again. And in the current climate they can't get type rated guys?
I can appreciate how exciting a job offer now must be, but do temper it with some cold hard realism.
(I'm lucky enough to be flying the -400 for an Asian freight operator)
Best of luck.