Oh yeah, Egyptian sets work perfect for SG1 artwork. Here's one I did last year.

The Jumper Bay was, I believe, one floor up and had the retracting roof as well as the retracting floor for dropping down into the gate room. The conference room was, I believe, a dead end. Not even a balcony if I remember correctly. Joseph Mallozzi has the plans for Atlantis on his blog on wordpress and in the forums at gateworld if you search blueprints there's quite a lot of info. I think there was a transporter on the gate room floor to the left (if you were facing the stargate).

If you want help with textures I'd be willing to help out. I'm sure others would too. :)

...... Kendra