[DK on the road]

Can you get a 75 watt bulb in your here temporarily to get it cranked?

Short answer is yes. Done. Thank You Richard! 

But I was using the only corded light I have, in my Compressor box. I had it there because I once had the pumps freeze up. 

With Fuel additive placed in the tank, running the C15 for 5 minutes to circulate the additive, along with a period of warming with the light, and the ambient temps getting way up to 22-24 degrees, I think a starting it up in a bit will get the additive into the fuel line to the Gen set and allow me to have access to the genset when needed. 

When I get back to my shop, I might add 40' (+/-) of a loop of Heater hose with valves only to be opened when it's cold, so I can loop coolant adjacent to my Genny fuel and filter in the hush box. I have a side mounted Genset, so it's not super hard to route all of this.

Adding another loop line to my Aquahot is option #2. I need to review how I add to its manifold and another pump. Currently I'm to cold to go outside and investigate