You need 14 new WP bolts. The ones that fasten the pump along the outside are shorter than the ones holding the pump in the center. You will have 5 longer bolts IIRC. To remove the bolts without damage, soak the hardware overnight in PB Blaster before trying to turn them. This has never failed me. You will probably need to smack the pump with a rubber mallet a few times to free it from the block. Be careful not to lose the locator pins. The gasket will probably have to be scraped off. In my experience, water pumps seep at the gasket at the most. They don't leak as much coolant as you've been adding unless the leak is at the shaft seal. DEFINITELY replace the WP.
I install the WP gasket dry, but Stan K. uses sealant. To each their own I guess.
