Global funding is not a big obstacle IMO, since there has been a lot of international funding and science lately.
But right now we should still stick with sending manouverable probes and trying to make them last for multiple years on a ground mission. Currently there is huge ongoing developement with robots that can handle varying tools. They could be sent to build the platforms for space stations ready
They work 24/7, which makes them very efficent on the long run compared to humans.
That would have a lot of spinoff value too, i dont think you would be getting as much from manned moonstation.