I was refering to the stock charging system, with the added load, the stock charging system will be putting out close to max output, and this would probably lead to a failure of one of the components, due to their age.
With the high output system you won't have that concern.
If you do add accessories, don't wire it to the original wiring harness, run wires directly to the battery, install fuses in the power leads.
It also wouldn't be a bad idea to have relays in the 'load' circuit, that get power to activate the relays from a 'switched' power source, so they are shut off regardless if you remember to do it or not.
I added a set of PIAA 40 driving lights to the R65 (each light is 55 watts for about an additional 9 amp load), and I have to run the bike at 45mph no stopping , to keep the battery from being run down, if I have the lights on.
So I know that even at highway speeds, that the alternator is putting out near maximum power, I'm waiting to see which part fails first, as this desert heat is not kind to anything electrical !