One suggestion: with that much generator on hand (Well two suggestions)
First: have and electrician install a proper GENERATOR TRANSFER panel on your hose with a proper INLET outside the house. and make up an extension cord "Generator to inlet" so that you can park the generator at some distance (Near a tree or post you can chain it to when power fails.
I found my house needs less than that genny can crank out most of the time (Winter I drew as I recall about 3500 watts total.. Summer I run Central Air. that was NOT on the transfer panel. Heck it was not on the main panel it had its own fuse box off the meter)
Two. Run it every month 1/2 hour or more 1/2 load or more (Space heaters work well you'd need two)