Shadows are solid bikes in my experience, and Honda builds 'em bulletproof for sure. So the bike itself is certainly a good machine. What's sketchy is the salvage title.
Most insurance companies don't even bother forking out to repair a bike that's been dropped, they just total it out and cut a check. What this means is you end up with an awful lot of bikes that really aren't all that damaged, but get issued a salvage title anyway. Of course, you also end up with a few bikes that are genuinely wrecked having salvage titles issued as well.
Given what the seller has replaced, it sounds like the bike likely took a header into something. Bars, mirrors and fender. Of course, you'd also expect to have new forks as well in that situation, I'd ask the seller if you can maybe see some photos of the bike prior to repair. Chances are he bought it at auction, and would almost certainly have photos. If he claims not to, well, go with your gut whether you trust him or not.
Also, and I'm sure you've done this already, but take yourself a long, slow walk about the bike and look at EVERYTHING. The edges of the pegs and shift lever, engine cases, rear fender mounts, everything. Imagine the bike laying on it's side and look at everything that would be in contact with the ground, to see if you can spot a pattern of damage across either side.
The final thing you want to watch for is any damage that may have been done to the frame. Handlebars can be replaced all day, but a bent frame is a death sentence for a bike. Will the seller allow you to test ride it? Or if not you another motorcycle buddy with more experience? You need to get it out on an open road, get it up to 65+mph and pay special attention to any shimmies or shudders. A bent frame will reveal itself at speed. Of course, you could also drop it off with a qualified bike mechanic and explain these concerns to them, and let them have a look. They'll charge for that service of course, expect to pay between $60 and $100 for a full check-up. Only you can decide if that's worth it.
Lastly, common wisdom says that a bike with a salvage title is worth half of Blue Book. It can be tough to get someone selling a bike to agree to that, especially if they've put money in to make it sellable, but that's the usual practice. If you decide to pay full price on the bike, expect to get lowballed in a BIG way if you ever decide to sell it.
Anyone have anything to add?
Let us know how it goes, and welcome to TMW!