Web site (site clean up & completion – 80% of the work is done)

1. I need to clean up the databases of which there are 3 so there is correct functionality in display and admin.
2. I need to include list of ‘Related Products’ with each product selected by a customer. Example: http://penbiddle.com/index.php?route=product/category&path=25_29_62, (click on Angona Handle for pop up with ‘Related Products’ cloud)
3. I need to put in a shopping cart with postage calculator and checkout with paypal, sagepay, google & amazon into my current web site.
4. Plus a bunch of small things need to be fixed up like wording placement and meta tags, lines in the wrong place. Just site clean up, a few hours of work at the most.