A switch is a good idea as well, but if you are sure to shut off the main breaker in the panel then you should have no issues with back feeding to the street.
So, being an APC guy.... what discounts can you get?
I was looking at a 7000 watt today with a field kit that will allow 8 breakers switched. You can set it for auto or manual switch. The generator runs on NatGas so I'd never have to fill it. I'd cut the breakers over for the furnace, hotwater, fridge, freezer and MBR for cable, TV and lights. The circut with the freezer also has the cable modem and wifi router so I'd be able to almost live in the MBR... :thumbup: It was $1,800 plus the field kit for $159.
I'll have to do the math on all those items to see just how many watts I really need.