Originally Posted by Simpler=Better

I would pull the glow plugs, squirt in some MMO, and let it sit for a couple days. Then spin it over a few times by hand to feel for problems.

Make sure the MMO has blown out, you don't want to hydrolock it.

Then just reassemble, change the oil, and fire her up. The brakes may be rusted, and ou might have issues with stuff growing in the fuel tank, but other that that I don't see any problems.