Hi,
Your project sounds very interesting and I'd really love to learn all those things. I am familiar with some of them, but regarding others I will welcome your directions.
As for the price, I actually aimed for a little bit higher, but your explanation sounds fair and I'm willing to try and give my best to earn that promised raise :)
Regarding my experience, you can see for yourself that I've worked here mainly as a content and article writer; but, I've also done some VA work, which included blog posting, forum posting, article spinning, audio transcribing, etc.
You're welcome to check my reviews and should you have any questions, I'll be happy to answer.
Kindest regards.
Milan