It is highly likely that Trump's home has every single one of those items. Remember, he still has the highest level of security clearance and the government maintains the ability to confer with former presidents after they leave office. His house is considered by the current administration to be a facility under the control of the Secret Service. They just argued that in federal court as a reason not to release the search warrant affidavit because it might leak information that would hinder their security plan for the facility.
Do you think the Secret Service team tasked with Mar a Lago that has to be able to support highly classified materials and discussions at any time doesn't have a SCIF and 24 hour security?
The arguments being made by the current administration are ridiculous now that they have argued in court that the house is a Secret Service controlled site.
I hope you are right about the SCIF. What you stated is quite logical. And Trump does have 24/7 security via the Secret Service.
But if there is any proof that it actually exists I haven’t seen it.