heating a mid-century modern home

It is the end of week two, and we have heat! Anyone who owns a mid-century modern home knows the infrastructure, at this stage in the game, is shot. The house doesn't heat up properly, the electricity is under-powered, and the water pipes are too small. The solution for the poured in the foundation heating ducts which had rotted out during the last twenty years was so much simpler than we had been led to believe. A cut in the ceiling here, a poke through the wall there, and we have forced air heating up and down the length of an 18 foot hallway with one foot of dropped ceiling (just enough for a duct as it turns out). It is our ONLY dropped ceiling in the whole house, almost as if it had been made for just this purpose (perhaps it had?).

Ceiling hall which holds the heater and all the ducting, see the new"front" room vent on the left.