The genny would just need to go as far away as need be for the noise factor . Also remember exhaust fumes and heat too .
The genny needs to be capable of producing more power than you will want to use ie , no good having a 600 watt genny if the heater you want to use is a 1000 watts . The other way round would be ok .
Anything over 1000 watts , you want heavy duty cable , not thin white lighting stuff.
If you overload leccy cable it overheats and can melt and cause a short or catch fire .
Not a good idea to have it laying on the ground either , so you start talking fixed armoured cable . Either underground or above head height .
The other option is to move to a desert . Mind you , if you do that Tony B liar or David Cameldung may invade you and kill you for the weapons of mass destruction that you will be making in your shed !