With any short production run vehicle like this the issue will be parts. You will probably never have to worry about the engine. With reasonable care it will go forever. Things to worry about are thing like, body parts, turn signals, taillight lens, electrical switches, CDI unit... In short, all the peripheral systems that enable you to keep riding will be, at best, difficult to obtain. It will get worse with time.
I ride an old bike. I have been collecting a stash of parts for years. When my left handle switch broke I got the last one Yamaha had. It was broken. I had to build one switch out of the two broken ones I had. Luckily, my bike had a 13 year production run, so used parts are more or less readily available. That in not the case with your bike. You can usually graft on other stuff, but you will need to pay a pro to have it done properly. $$$
I'm not saying you should or shouldn't do this. Just be aware of these issues. If you are reasonably self sufficient, OK. If you want off the shelf parts availability, this may not be your best choice.