You don't take people off the deed in real estate. Each deed is a grant of some share (from zero to it all) of ownership from one party to another. Your sisters would want to use a quit claim, as they don't want to make any representations as to what their ownership actually is. You'd want at least a special warranty deed that says that the sisters didn't themselves do anything to encumber the property. You'll have to negotiate that.
Frankly, I suggest two things:
1. Get an attorney to draft the deeds, have them properly executed, and filed with the appropriate agency.
2. Get owner's title insurance. I wouldn't even take a gift of property from my sainted aunt without title insurance.