If I were you I would save alot of money and aggrevation, set up a trio or pair of smaller monitors in the small building properly, raise them from hatchling to adult, learn from them and find out that it takes to breed them, and that your dream will be a world more expensive and difficult than you think.
You said that you are gonna try to just heat basking spots, and not those buildings, this tells me you need to learn alot more about keeping them and how temperatures from the ground and air can effect their cages.
Also air conditioning becomes very important in summer, if not you could kill them fast with the heat. Back-up systems to keep air conditioning going and to prevent gremlins from killing them are important. Even in summer here livestock that can cool themselves very quickly die, they are warm blooded so winter doesnt seem to cause problems, they get over heated by accidents in very expensive reliable modern facilities on a regular basis.
You might want to visit FRs place to see what a much smaller facility takes to set up properly, nowhere near 100,000 sq feet.
You have an expensive dream there.
Good luck.

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