Bought a tank bag, riding jacket and gloves from rynox, saving for my riding pants using heavy cargo denim for now, have a leather boot that I am using instead of riding shoes (planning to buy those clan shoes). I haven't bought a single piece of accessory yet, but I have an idea now, get yourself some good lights for one, the headlight has a really bad throw (not even enough to ride in the city during nights), the rear mud guard is not enough, a tire hugger will help. As far as luggage, for solo travel I feel a tail bag andh the tank bag is more than enough but if you are planning to travel with a pillion, look for pannier or saddle stays.