325638 Advanced stock control system

I am looking for a programmer to design an advanced stock control system that can integrate with my oscommerce site. I sell around 300 products and need to be able to easily keep track of stocks, add incoming orders and deduct non website orders easily and quickly. Aswell as the list of all products I need filters to display only the different categories or manufacturers. I also want to keep records of what sold when and some reporting on top selling products and how many times they sell per week/month/year. I have a heavily modified oscommerce site and it is live so I would like someone very experienced in oscommerce to do this project. Thanks, Mick