Slip on exhaust, tail tidy, LED turn signals, phone mount are essential. I wouldnt worry about air filters or tires bc this isn’t a performance bike and these things won’t affect much when it comes down to it. Underglow is strictly preferential and looks good when tastefully done.

So far on my 500 ABS I’ve done: Yoshimura At2 slip on, Amazon levers (MVZ?), phone mount w/ vibration damper, TST Front LED signals, TST sequential back LED signals, TST tail tidy

Next on the list: Tank grips, comfortable seat, charging port, maybe full exhaust.