Well...
It's been awhile since I spammed the forum on this project...

I took Ramshackle's advice and decided to build some corridors. This was a great idea (thank you very much Ramshackle) as it has given me a concrete idea of how to design my base overall.
First, though, I also bought a bunch of stuff from Antenocitis Workshop including some computer screens. I painted these up fast and here is how they came out:

I then glued them to various places around my base and this is what they look like:

Now back to the structure... I built two corridor pieces and they look like this:

When I put the whole base together it looks like this from overhead:

Ideally, I need two more structures to connect to the passageways of the box on the right of the photo. I figure a large room (lab or something) and an airlock.
I have also finished my colonial marines... but haven't had the time to prepare the pictures. I'll do so later this evening.
Wow... what a project! A lot of work here and I'm pretty much exhausted (as probably you folks are having to painfully watch my progress). So I'll be taking a break and working on my Adventurers and Shadowforge Tribals (I got their new Heavy Cavalry mounted on Dino's.. Yea!) for some time to come. I shall return and finish the project, I just need a break.