My two cents: when you say “obviously I don’t know anything about these businesses “ kind of tells me you need to be very careful here. If you are looking to expand into complimentary businesses, you could look at other options, like maybe media. You could advertise your own real estate stuff and bookkeeping. Or a cleaning service, idk but installing flooring is pretty specialized and I would ask where the technical expertise is coming from to run the company. Just a thought, if you decide to take it on, good for you. Sounds very ambitious.