1. You will need a cable feed to the equipment location in the closet. Since you MUST use a cable box these days for most of your channels, if there isn't a coax feed to your closet it will be needed.
We choose this closet because the cable and everything feeds through here.
2. The wiring from the closet to the TV location sounds difficult. So why are you trying to run the least number of cables? When the walls are open and cabling is being run, I want you to run the following cabling...
1 component video feed (3 pieces of coax)
1 composite video feed (1 piece of coax)
Done already.
3 or 4 pieces of cat6 cabling (cat5 will work, but I would go with cat 6 now)
1 HDMI feed
This should coveryou for current and most future wiring requirements including a remote control system if you need it.
Going to do the HDMI feed - look into the Cat 6 - will not be doing a remote control system.
4. The speakers need to be run with decent in wall wiring. Not overpriced Monster stuff but some good 14 or 12 gauge in-wall rated cable.
14" inch is done and tested yesterday, does not seem to be any interference from the lights or other electric in the ceiling.
The LCD can be hung directly to the metal studs using Togglers unless you are using, and need to use a swing out wall mount. If it is just a tilting mount then you do not need any of that extra stuff done. If you are using a swing out wall mount then I would lean towards going with two floor to ceiling studs as this really will provide the most structural support. Especially if you then use an in wall LCD mounting system.
The mount swings out, so I am thinking the stub option, by two, you mean two side by side, right? This is the best way I think.
Would you benefit from a pro installer? Quite possibly. But most pro installer will just make sure it is done right. They won't necessarily put in a new stud, but would hire someone to do that. They also often don't do work unless they are selling you equipment. Since you already bought your stuff it will be much more difficult to find someone to work with now.
Gotta say, the one thing that really jumped out at me was the LCD size. A 37" LCD should be viewed from about 5 or 6 feet. If you are viewing from a more typical 10 feet or so then that size tv is far smaller than you should have purchased. Regardless of what you think right now, the number one complaint among people who buy flat panels is that they could have gone bigger. In a main tv area at 10' going with a 50 to 60 inch display is strongly recommended.
We get this, a lot of the viewing will be about 8 feet away, so it wount be that bad, esp, since we've been viewing a 32 in from 12 feet.
You aren't going to get me to tell you to hire a pro. But I will say that you do want to be very sure of everything that others intend to do. A good installer is reponsible for that, which will give you some peace of mind, but it will likely cost you between $2,000 and $3,000 for their time alone. Not including drywall work.
Good luck!
Thanks!!!