PreSales question: Multiple boxes (variable products)

We’re looking to ship our variable physical products by UPS or Fed Ex, in which 1 (variable) item ships in 4 different boxes and another variable item is packed in 5 boxes. Each box of the 4 or 5, is less than UPS maximum size (& weight), but together, all 4/5 boxes exceed the UPS size limits. (combined Weight is 130lbs -under 150lbs maximum). However, if they order 2 of the same item, then the combined weight would exceed UPS maximum weight of 150lbs, even though each individual box is averages 30 lbs)