Our victorian fireplace system

I just bought this awesome classical-looking mansion on the outskirts of town. Assuming all goes according to plan, it will be gutted and totally remodeled. The bones of the house are worth every penny I paid, and with 15 rooms, several bedrooms and three fireplaces, I will have my work cut out for me! After I completely redo the outer rooms and make one giant entryway for the lobby, I plant to install the largest fireplace in that area of the mansion. Each room will also be remodeled to allow for separate units! Upon completion, I will have at least fifteen rooms to rent out. While each fireplace will be tested, I still plan to close off most of them for safety purposes. I don’t want tenants trying to use a fireplace for heat – these old mansions have unique exhaust systems for them. They sure made a lot of fireplaces back then, and because of the age of the property, I’d rather mitigate the risk and seal them off. Each fireplace will be cleaned up as eye candy only. For heat, I’ll be installing a mini-split Heating, Ventilation and A/C system for each individual room. The equipment will have a thermostat to control the temperature per room as well. In fact, I’ll end up with so many units after the renovations are complete, I’ll have to have at least ten mini-split systems installed. The mini-split Heating, Ventilation, and A/C systems are “ductless”, so I won’t have to cut into the walls of the mansion to install ducts. The ceilings are vaulted in some rooms, so ductwork would be challenging to lay as it is. I just can’t wait to get this thing ready for use!