More than 6 options for prices custom product

Hello, my problem is the following:
I have a custom bow creation page, and I want when someone chooses any different color or pattern for the item " riser " for example, the price should go up 50 usd. And so on for all the items. There are 8 items in total, but wix only lets me do this with max 6 item categories. I also want the site owner to easily change the price added by choosing custom colors from categories, in a easy CSV file with the prices.
website is this one:

Thank you very much !