+1
One could go to soft start setups; vfd ect. But that adds cost.
I'm a firm believer in manual everything except for the semiautomatics...
I would run a generator interlock for the breaker panel. This is a house, not a research lab, or server farm where if the temperatures rise **** goes boom/ruined.
As for the cheaper buy in price air cooled stuff; while they have a purpose for the average joe that won't run a bunch of hours over the water cooled diesel. If you plan to use the machine to full potential the 12k buy in on a diesel that will run 10k hours over the twin air cooled for a quarter of the price.