Add Fee by product length

Was wondering if your pro version will allow me to do this …
I have to charge an extra shipping fee for items that are 96 inches or longer – for a specific shipping class – or categories.

I want the fee to only apply ONE TIME if the customer has multiple items in the shopping cart that have a length of 96 inches or more – for certain shipping classes or categories.

Is that possible? I don’t want it to add a fee for each 96 inch long item – just a one time fee. Thank you