The subject is interesting, but you're trying to cover a wide set of topics. Try to get a series of articles instead of just one. At least, that's my opinion.
Luis C.
General Disclaimer:
Are you seriously taking the advice and code from someone from the internet without testing it? Do you at least understand it? Or can it easily kill your server?
How to post data/code on a forum to get the best help: Option 1 / Option 2