I used rust bullet on all the inside like you have there. Its just going to cover the rust, kill it, protect it from future rusting, and look a little better.

The weather strip seals i have info on, ill have to dig it up.

I would go at it yourself and see where it takes you. If your stuck you can always go to the school. Posting on here, trying it out yourself, and keeping your head up would be what i would suggest. The amount you would spend on the schooling would pay for your supplies etc.

Steve