Questions.
1 What color is the bike?
2 Have you ever rode before?
3 As a passenger?
Lots to say on the subjects here. First up, hats off to a new adventure in life. I've been riding since about age 11 and don't regret ever learning to ride. I've loosely known a few people who were taken out on bikes and many more that have a lot of bumps and scrapes, myself included. I've met people who have fallen and gave up riding but more who said they learned how not to do that again. Odds are that if you've never rode before, you'll be kicking yourself for not starting sooner. When I met my wife, I took her for a short ride in January in Michigan. She was hooked as a passenger and now I don't dare take the bike out without her.
As far as helmets go, my wife and I prefer full face. I've had 3/4 face with shields most of my years and rode in Ohio with no helmet as well. I currently use a motocross helmet with amber goggles. I personally feel safer with it. I believe a comfortable rider is a more confident rider and is a little less tense on the road. We choose clothes that are primarily best fit for the weather. We have boots and balistic jackets for longer rides and freeway trips. But, I wear flip flops, shorts, and a t-shirt much of the time around town. Wear what you and your wife feel safe in because sadly bikes will always loose regardless of helmet or lack there of. Defensive driving is a must. Assume every vehicle on the road can't see you.
One of my first mods to my bike was a set of lowering links. I'm about 5'10" 140 lbs and had fallen over from a dead stop because the bike stood too tall and is a little top heavy. After the lowering (approx 2 "), the handling characteristics improved greatly. Then came the K&N stage 2 jet kt with a Supertrapp exhaust, crash bars, bags, improved lighting and horn, passenger backrest, and much more.
Unfortunately, since I got the Sea Beagle II, I only ride about 150 miles a year. Maybe I need a bike rack on my boat. Anyway, there's so much more to say than I can type. PM me if you want my number and I'll tell you more.