Hard to say. It is a lot of points and I haven't seen a good one yet (apart from some old high elf dragonriders on those horrible S bend dragons that look like bad plumbing with arms and wings). It's good but I'll probably be focusing on proxies for my own unpainted force for a while so I don't know how much use it would see.
Did you buy one or are you checking for interest? I'd probably be willing to build one (especially if it's not a Mantic one).
As for painting it I've still got a can of Citadel red undercoat spray that I was planning on using on the Heresy dragon (which I might prefer in green now). The can's been leaking over the years but it might still be of use.