A scootworks rear pulley is a must IMHO. These bikes need a sixth gear sooo bad it hurts. The pulley helps a lot and is hardly noticeable on the low end.
Congrats on the new bike.
I honestly didn't feel much difference other than a little lower RPM's at higher speeds, the pull felt the same in all 5 gears.
As for the bug issue, am I the only one that wears a full-face? I just like the idea that, if I low-side, I'll be able to at least eat solid foods with my in-tact chin while letting my broken leg heal.
I do recommend a new horn, the Vulcan may look mean, but it has the same horn as a GZ250 or Nighthawk 125. But I drive like a mid-town New York taxi cab, where I lay on the horn for just about anything stupid that occurs within earshot (involving cars, obviously), so I probably should not get one for myself.
Windshields are all about preference. I prefer the stock look of a Custom, but a Classic looks nice with a shield.
One of the biggest necessities are bags. I usually ride with a backpack but sometimes I just want a little space to hold my iPhone, wallet, sunglasses, maybe a book, etc (I don't hold shit in my pants pockets because I have had stuff fall out before), and I find a backpack for such meager items is cumbersome.
Though engine guards are practical and functional, I absolutely hate the look of them so as with the windshield, that is absolutely preference based.
A lowering kit and a fatter rear tire are aesthetic modifications that I love the look of, and it doesn't reduce maneuverability of the bike either.
If you believe in "hear me, see me", then some straight pipes would do you good, though they may get you in trouble with the noise police.
Remove the Caution
stick from under the gas cap, it looks corny!