I have been thinking about your oven, Craig. Given that it is a commercial oven and a traditional Neapolitan built one. 10 hours to heat is crazy. If you were to invest in 4-500 dollars of insulation blankets and build an insulating door, you could probably keep it above 500 degrees with a weekly firing of 2-3 hours (which would bring it to your pizza temps), even less with a couple of short firings spaced 3 days apart.