I'm building a new house that will have hard stucco in the soffits. I wish to install multiple IP cameras. I've read the recommendation to use an external Dahua junction box so there is room for the IP camera tail to be coiled up and the ethernet plug to all fit in the junction box. But should I have the electrician place round or rectangular junction boxes within the stucco as well? Can the Dahua junction boxes screw to an embedded electrical junction box? I don't want to try to attach everything to the stucco directly without a box there.