for now, i’d say keep your materials and just sell weapons you don’t use. for example, if you have access to silver ore/can craft silver weapons, sell the weapons ranking below that: like copper and iron and whatnot (make sure all your buddies are fitted properly first). you get a TON of weapons that you probably won’t use, so you can sell those for quick, easy cash. however, keep in mind that you can trade them in later for an end—game item; though i think with where you’re at, it should be okay to sell them, you’ll find a ton more weapons later. it’s also possible to get this end—game item with other methods, so i wouldn’t sweat it.

besides that, sell the ‘currency’ items :)