CMS Made Simple Product Module Adaptation

We would like a fairly small modification to the CMS Made Simple product module to cater for our site needs. Essentially we would like date based product variations, and once the date has expired it will automatically remove itself from the database. Having not adapted any modules myself, it's hard to guage to complexity of this - but I can't see it taking any longer than a day (max). Ideally to take on board this project, you will need as a minimum: Good communication skills, Experience working with PHP, Knowledge of MySQL, Good feedback. More information can be provided on request, please PM me.