I am ready to place down my Travertine coping around the SWG pool. Does anyone know which "Type' of cement mortar I should use for the grout between and on the bottom of the coping? I was thinking of using the Workrite Masonry Cement Type N since it has the color that I like and would blend nicely with the coping instead of using regular white. Is Type N the right one to use for pool coping? Thoughts and suggestions? Thanks.