Make sure that you give some thought to the path the lightning will take. . In Medina County Ohio, we had a golf course club house that had the conductor from the lightning rods running across the sloped roof and then down the side of the building. . When it was struck by lightning, the massive surge went down the conductor and lit a path of fire across the wood shingles. . The building burnt down.
Imagine a surge of energy and heat going down the path that you're giving it to travel. . That should give you an idea if your path is a good idea. . Will your installation bring that energy into the building ?
David