PHP-Loading Data Based- Scripting-Web Site Switich

Hi. We have a 6 year old running static property web site. Our present SEO/Web Master has been taking seriously ill and can not finish the project threfore we require a skilled person to finish the job taking over the work carried out so far on our New Data Base Web Site (NDBWS) in PHP/MySQL You will be required to load the (NDBWS) approximately another 1,000 entries, which has 150 entries already loaded and as our static stie is working, add weekly new entries to the (NDBWS) to keep it current and up to date. We will send you the up dates weekly, there are between 40 and 60 minor updates each week. However, as soon as the data base is fully loaded we will take over the weekly updates so it is in your interest to finish loading the data base ASAP. Having loaded the (NDBWS) we require you to activate the PHP scripts and ensure the MySQL data based is working/functioning correctly. Make some minor chages to the (NDBWS) i.e. move & add some nav buttons, move some parts of the site to other locations and delete some parts resulting in a new fresh image visually with as limited amout of work involved as possible, add a sitemap, site search facility, possibly some minor programming including: add to the PHP a "wish List" click on link to each listing for clients to gather and send to us their selected choices from our (NDBWS) and add price RANGES( Auto pop up click on price ranges for our property search facility) When the (NDBWS) is tested and functioning correctly then, take down the prestent static site and upload the (NDBWS) using the same www address. It is important that the work does not effect our rankings and with a new nav bottoms and additional content we expect our rankings to improve. Thanks