Need field to put weight apart from price by using woocommerce gravity forms product add-ons.

Woocommerce gravity forms product add-ons gives you the ability to add price to each selection, however in addition to price, I also need to set product weight for each selection to calculate shipping fees later during the checkout session. I want the option to add the weight in Gravity Forms next to price. I want this to be done with another plugin or some codes in my theme's [login to view URL] file, so it won't interfere with the future update with woocommerce gravity forms product add-ons plugin. Any suggestion and approach to solve this issue is appreciated Thank you!