great idea to change out those faucets. I went with both kitchen and bath upgrades. Bath remained two hole, all new plumbing, and to jammed up under counter with pex for outside shower, used flex lines on all, and isolated the outside shower. Water in those lines unused was unpleasant. In the kitchen went to one hole. Higher arch head, used one existing hole, skipped the silly plate and picked up a satin blank to match the faucet. Overall much improved. If you don’t have pex tools, pick up midpriced set, some proper pex pipe some crimp rings. Ive replumbed every fixture and water heater, factory was such a mess. Caution with flex lines to pex fittings, OD is different. Use auto style band screw types.