ZenCart P/N en QTY dropdown box for option_values

We're building a computershop based on Zen Cart and we would like to add a feature where a visitor can select a basic computer and expand with options and option quantity. We would like to add a QTY drop down box next to a attribute/option in the product_info page. Which can be added to each selected option_value within the admin panel. Each option_value within the product should be set up separate from other products like minimum and maximum value. The total price on the product_info page needs to be changed dynamically. At the moment we're using the module Dynamic Price Updater. And also adding a part_number field to the option_values. Which can be set to enabled or disabled to show or don't show to visitors. Examples images: product_info page: zie "[login to view URL]" Admin panel: "[login to view URL]" Admin panel "[login to view URL]": "[login to view URL]" * We've installed Zen Cart version 1.3.9h. Various modules installed and is Multilingual (Dutch and English)