Customization of Shopping cart Script - Clickcartpro

Looking to tweak or customize my existing shopping cart script called clickcartpro. Its cgi. 2 features I need done : 1. Custom shipping option - A setup page that allows me to import list of zones with individual delivery charges. - On order form, allows for customers to choose the zone they live in within Singapore, and the relevant delivery charge to apply to order total. - An option that can be set on the same zones page that allows free delivery option should order sub-total exceed $X. - Function that disallows order submission if zones are not selected. 2. Shipping/Delivery Report Generation - Click a button to generate a shipping list for particular date. - Fields needed on shipping list : - Name/Delivery Address/Cellphone/DeliveryTiming/Item Desc/$Total/Additional comments. - A report setup page that allows future addition/removal of fields to display on the shipping list. - shipping list to be sorted by delivery timing 1st, then delivery address. - Print function to print/fit list on A4 page. 3. "Fully Booked" feature - A setup page that allows me to set max orders for each day of week. - When max orders reached, a notice goes up on homepage that we are fully booked for that day. And directs customers to call to enquire but store disallows online order Thanks. Paul