u/Impulse1-2-1

I have 2 erdrick shields. Is it better to keep and level both for the immunity to floor damage buff or ascend them?

I currently have the metal sword, sand spear, and queen's whip. Currently my party is warrior, mage, and thief. I have 1 reroll ticket left and not sure what weapon to roll for. Also saving up for 30,000 gems to pull either the metal banner or erdrick banner. Any help or advice would be appreciated, thank you.