Thanks for the suggestions...I am not much into building, so I will do my best:
The framing was your typical wood studs, over poured concrete walls. All of the walls were insulated between concrete and drywall.
The lighting is pretty basic- can lighting throughout, on dimmers, with wall sconces ($24.99 at HD), and stair lights (Kichler $44). Could have spent a ton of money here, but lucked out by finding good values.
The risers...when I did an addition on my home, I had the basement dug to 12 feet in the theatre area- the other part of the new basement will be a pub, card room, etc- this area is at 10 feet. When the risers were built, we started the last row at 10 feet, with 2 6 inch steps down to the next level, followed by 2 additional 6 inch steps to the lower level. Risers are constructed entirely of wood- studs 12 inches apart, glued and nailed.
The woodwork- a designer came up with a fantastic look by assembling different types of trim. This area was constructed entirely by hand and it took over 3 weeks. The columns were built out about 2 inches from the wall. The wood is poplar and was stained by hand. After seeing the woodwork, we decided to paint the theatre ceiling from the projector forward, matte black. I wasn't sure about this at first, but it turned out beautiful and goes really well with the black carpeting.
The screen is a Dragonfly, and the speakers are behind the screen. The original plan was to use some old NHT speakers that I had, but we decided to go with new Atlantic Technology speakers behind the screen, which allowed us an extra foot to recess the screen. The screen is 120 inches and fits nicely in the wood trim. As someone who is a novice to all this, I found it interesting that the speakers behind the screen are not an equal distance from each other- in other words, if the screen is removed, the speakers are not symmetrical. Installers said that you will not hear a difference at all, and they had to work within the studs that were in place.
Thanks for the suggestion. As I said, I'm a novice at this. Any other questions I will do my best to answer.