That was enough to expand the weapons by 4 or 5 slots iirc and bows/shields twice. Most weapons break quickly so there is always some room, at the end of the game I still had 80% of weapons I was keeping "in case" like fire/thunder/loads of guardian ones. and once you have that sword, you don't need much more
Oh and that placeto store some of them.(the house you can buy)
There is a place where you can find each type of weapon (lance, 1h, 2h) for each element, so there no need for saving the elemental weapons either.