So not only did I get the bastion 90% finished, I'm pretty happy with how everything else is looking.

I just left it in the garage with a bit of paint on the foam.



So here it is before the paint from all four sides:

above you can see one entrance and below you can see the wooden walkway


below you can see the second entrance and its makeshift walkway
 above and below you can see the bunker built into the wall of the moat.





I like the view from tabletop level.  I think it is a good mix of hiding the bastion, while ensuring the troops on top will still have good fields of fire.



 A nice top view

Here's a great view of the built in bunker





Right now I expect the following rules for this piece of terrain

an AV14 Large Building capacity 30 with up to three weapons, 0, 1 or 2 icarus lascannons and 0 or 1 quad gun

8 heavy bolters, 2 per side, 4 mid firing points per side, 2 lower firing point per side, battlements

one small bunker AV14 capacity 10 with two firing points inside moat area.

what do you think?