When Replacing Impeller is it necessary to replace gaskets?

Getting ready to replace the impeller/water pump on my b100 10hp Honda outboard. For my BF8A they sell a kit that has the impeller, gasket, and bearing. For the older 10HP all the parts are the impeller, 2 gaskets, and 1 cover gasket. The cover gasket looks to be metal and the other two are regular gasket material. Do all the gaskets and cover gasket need to be replaced as I have to purchase these parts individually as there is no kit. Any other parts that should be replaced while I have it broke down?

Thanks in advance for the help

Usually all you need to replace is the impeller.