Actually, I believe it was me who mentioned Poolsean first. But he really knows his stuff on SWCGs and is a valued member of our support team.
Sean's got to be careful, being in the pool biz, how he advises, because of our rules. And he is. So expect him to be more informational and less selling. Toybuilder will have to make the final decision.

Your builder will have to advise you on how to use the spa vs the pool in the winter. Pipes below the frost line won't freeze--if they are below the frost line--but it may be VERY expensive to run it all winter. I just don't know--I don't know spas.