I'm in the process of finishing a stick built garage in northeast Ohio. It is 30x40 on block foundation. 12ft2x6 sidewalls giving 13'6" ceiling ht. Attic truss, outside stair, 10x40 lean,2400sq 4" concrete, 3 overhead doors 3 man door, 5 windows shingles vinyl siding.Slab heat with electric...