Conincidentally, I actually had a rather lucid dream about this a few nights ago. I can see it is possible even with today's technology to get there and stay there. It's just a matter of cost and inclination.

We need to send lots and lots of larger seed probes out there first though - not the limited scope probes and landers we're using now, but general purpose, long life scouting probes with engineering, tooling and life support payloads.