Left side of engine between the two engine covers. You'll need to remove the rearmost cover. It's covered by a square piece of rubber. Best get a new one for the cost of it. 2x6m allen bolts holding it in place. Careful not to strip out the bolt head, make sure your tool is well seated before attempting to turn.
Check your air intakes to make sure they are open and clean right to the carbs, also use oem filters. Maybe try taking a run without airfilters and see if that makes any difference. Maybe the computer?
Remove false tank cover, left side lower and upper faring, radio etc, and the inside faring. The rest can stay. Cables can be tied together to work them into place.
I think that's it.
Sound is a fecal thing and it needs things to bounce off of. Get a setup that sounds awesome in the garage and then move it outside, half the quality is gone. Now add some other noise and wind to carry things away, and you are left with what a plain set would provide.
Probably won't get very wet while moving, but get soaked when stopped. Also, if you take it you won't need it, but if left behind you'll wonder why on earth you hadn't packed it along.