You can shop for a better price, but make sure all quotes cover the same work. I don’t think the price is excessive if the shop knows Hondas and does quality work.
Since they’re replacing the water pump and the coolant, I’d request a new thermostat and radiator cap, too.
I paid very near your quote for the same job on an Accord, but that was a few years ago. I’d expect it to be more now.