If the roads are clear, I ride year round. For years I lived in Ottawa Ontario where the winters get down to -30 Celsius
Dress warm, but make sure you can still move around as you don't want to restrict your movement with bulky clothing. Remember that the faster you ride, the more cool air will get into your clothing.
I have a pair of insulated coveralls that I wear when the temps get down below the single numbers on the 'f' scale.
The bike runs very well with the cooler denser air in the winter.
Road salt is another issue to think about in winter riding. Oddly enough I'm not going to mention the corrosion aspect of the salt first as a year round rider where its best described as "holy f.... its cold". Its the chipping of the paint finish that can happen if one gets peened by a passing salt truck or flung up from other vehicles.
Pay attention to keeping the bike dry... very dry to avoid a majority of the affects of the salt. My bike lives in the garage, unheated. I do not get the bike wet or allow it to get condensation on the outside, as this will allow the salt to penetrate into all the inaccessible places. If the temperatures rise to get closer to the 32f or 0 in the international standard C, I would get the hose out and wash the salt off. Salt needs moisture to work, so I keep the bike cold and dry. Your own area may be different in moisture levels, where I lived before its a dry cold. (ya ya... I hear the echoes of the Arizona people saying its a "dry heat"... but it works both ways.)
Keep the fuel tank near full. After your ride of the day is over, the warmth of the engine below will heat up the fuel and condense the moisture out of the fuel with the use of the free air space in your tank and bugger your next ride up.
Never had a problem starting up in the mornings, haven't used the thumb switches either. Don't know how use the choke thingy on the left handle. One swing of the kick and it fires right up. By the time the fool that sits on the seat is geared up, its ready to ride. I am gentle for the first few miles as this is when any spark plug likes to foul up. Once the engine and spark plug is nice and toasty roasty I let it rip.
Bare in mind that tires will be very hard and not responsive to high traction demands. The compound of pretty much any available tires will not be up to task to peg dragging cornering.
The choice its yours to ride in the cooler temperatures. The roads are nice and free from those UAM motorbikes and their corporate clad leather outfitted riders.
Oh, and I stick to the regular oil change schedule and viscosity year round