Well crap, It looks like I overwhelmed you. I promise it is much less complicated than it all sounds. The very hardest part is taking that step and plunging in. Once it all gets going for the first time it's such a wonderful feeling, and you suddenly realize what an easy process it is (not that it won't take a little work). At least I didn't scare you off and it looks like you're still planning to go forward. Great. I am glad.

Your scetch looks very reasonable. It is even more complex than most people might reccomend for a beginner, but I would dissagree. With the proper attitude and knowledge, one could build a system that was any degree of complexity. I think you have a better idea now of what needs to happen, but you still need to read a little more about anything you feel that you don't fully understand.

I don't have any more time right now, but I want some time to think about it anyway. I will reply back as soon as I can, hopefully with some more ideas geared to your desired direction. Good job so far. I'll try and answer some or all of your questions soon.