OP.......I did exactly what you are describing about 10 years ago to power my Prowatt 300 watt entertainment center only inverter....
Except, I did one thing different.......I used a 3 pole double throw toggle switch.....the third pole turns the inverter power on and off........one throw of the switch turns the inverter on and switches the circuit input from shore/generator power to inverter power......all of my connections were done within 1' of the fuse/circuit breaker panel......
This system makes it completely fool proof for my wife and kids to watch TV/DVD/SAT while dry camping.....
Again, this was installed in 2003 and has been completely trouble free ever since.....one of the best mods I ever did.......
If you need any help wiring it up I'd be happy to assist........
