I think gulf live rock vs KP is apples and oranges to an extent. I have bought both and going forward I would only recommend KP. The source rock of KP is wonderful compared to the more Boulder, base rock look of gulf live rock. No aiptasia with KP either but tons of life on both. I have 40 pounds of KP in a QT now at about 60 days, can’t wait to add to the system.
Have it shipped in water and you’ll be happy you did if you want life. This is the one step in building a tank that I’ll never go cheap on again! Although, in fairness, going this route isn’t the only way to have a nice tank, just my preference