Tbh I just used the console to increase my carry weight allowance by 500, it’s been a game changer. If you don’t want to do that, remember to use your followers, they usually can carry at least ~130 mass. Then when you get back to your ship, dump all their crap into your ship’s cargo til you get to a vendor and mass sell. Or, in the context of my tip above, to dump all the weapons after you’ve accumulated so much.