Cart upgrade and layout redesign of small ecommerce store, addition of some functions.

Currently on Zencart v1.3.8, would like to upgrade to a newer & more efficient cart system. Selected web developer to advise on appropriate cart system based on my requirements. Also require layout redesign and addition / upgrade of some functionality which were missing or inefficient on original design. Please see attached file for the details. I have listed points specifically but this should be a straightforward job for any experienced developer as upgrading to a different cart system will tick a lot of the requirements off already. Project will be considered finished when I am fully satisfied with the outcome and new website is up and running on server. Developer to be contactable for advice if necessary after project is finished. Bidder to have experience in developing e commerce websites, in website design, and cart systems, and have examples of other similar finished projects. If project outcome is satisfactory there is a very high chance of ongoing work for selected bidder. Thank you!