3 tasks for fully functional OScommerce Shop (No Down Time)

I have a fully functional OScommerce shop running, and at no time do I want any down time. The Freelancer must be very experienced with OScommerce 2.3 I have 3 tasks which I require which should only take a couple of hours for an experienced freelancer 1. I would like to search my products in admin by Products Model number ( Part of the number or Full Number ) as well as the current product name. 2. I currently use Clixgalore affiliate marketing, but unfortunately the code is no longer forwarding all the information back. ( Value and Order ID are missing ). This may be a result of another affiliate code on our site. 3. Also our site could run a lot faster according to Google ([login to view URL]) Any improvement or setting changes would be most useful. Some code may need cleaning as a result of a template used. If you know that this would be a simple project for you then please bid. (Experienced freelancers only.) This could lead to more work in the future.