Before I start this project and make a mistake, what do ya think? Boiler loop is 1 1/4" gonna use a loading unit, run of 100' 1" Thermopex to house, total roundtrip approx 250'. Pumps are all 15-58FC's. Storage tank is 850 gallon, buffer/separater is gonna be 60 or 80 gallons. Infloor is in place. Idea is for DHW and WAHX to get the hottest water, (may zone the returns to the buffer to better "reuse" the water). Infloor to always draw the coolest water from the buffer, should never be below the 110 degrees that I use for my infloor. The infloor pumps to replace the coolest water in the buffer with hottest from storage.The only hitch I envision is the Boiler loop return bung is below my loading unit and I'm not sure that thermosiphon will work properly.