Good evening.
My $.02 in dealing with a marginally newer but more well traveled wing than that one:
If you don't turn wrenches, or know someone you can bribe with a box or 3 of beer you're gonna have a bad time.
If timing belts aren't recent, with proof, it's gotta be worth a decent hit on price, unless already cheep. Same with rear tire. Tire is worth $250-300 from the right place (Dunlop E4 for me), labour to change probably more.
When the tire is off service the driveline. You don't want to go back for that 1 little thing. Throw a ujoint and cover at it if you are feeling wealthy, or if the bike shudders with no tension on driveline decelerating in gear. Easy(ish) to do once you are there. Honda moly lube is where it's at.
I splurged and got a madstad windshield last year. Worth every penny. I went as short as they sell, and it's still tall enough to push the wind over my girl on the pillion.
If you are in the business of timing belts, drop the entire front end off the bike and change the steering bearings, fork seals and bushings at the same time as the belts. More room to work and made a world of difference on mine. Thicker oil than stock is also a good thing. I am liking the 10w in mine. Tried 15w and it was pretty stiff, but quite responsive.
Tutorials galore on this site, none of this is rocket surgery.
Change the front pads while you are there if needed. Honda pads are worth it. The 4* timing wheel goes on with the timing belts, worth every penny. A superbrace or blackwing brace (I think) makes the front a lot more rigid, again, well worth the dollars.
IF someone has taken to adding a bunch of incandescent (hot and power hungry) lighting on the bike, or has otherwise hacked into the wiring of the bike, you might have a bad time. 1st thing I do with any vehicle I buy is get rid of any substandard wiring, which is most DIY wiring in my experience.
The alternators on these (in my somewhat professional opinion) are fully adequate for all original intended purposes of the bike.
When there is an added 20 or 30 amps of load due to "Rings of fire!!!" Lights on the forks, lights on the windshield, lights on the saddlebags in addition to the factory lights on the saddlebags... maybe the poor old 40A alternator (550W on a good day) just isn't up to the task. The stock headlights alone use over 100w if I'm not mistaken.
I have 270,000 km on mine and am sure it's a stock alternator, if not the original one. Caveat being my bike escaped all power accessories other than a heated vest at one point. I'm now LED everywhere I could find a light... with some stereo upgrades.
I think I will be going on year 4 with the wing. No regrets, she's paid for. Kept the AGM battery on a tender over winter and she flashed up without any issues since being parked in October. No puddle of oil, no backfiring, no worries.
I've been front to back to front on this thing and am confident it will do another season without issue, aside from a front tire change when I get around to bying one. Once they are dialed in they are pretty much unstoppable, and are a blast to ride.
I've had good luck dealing with Cyclemax, Fortnine,
www.bike-parts-honda.ca (assuming you are in the great white north) and my "local" dealerships. I live out in the weeds so if I can't get a thing shipped to me it has to wait for my next trip into town, which isn't very often.
Your mileage may vary, no guarantee expressed or implied.