G,day all,
I’ll add my ten cents in here as my 2008 wee strom has just clicked over 180,000 km, so not far off the mileage the op is looking at.
These engines will last, and last, and last.
I think the biggest issue would be consumables as others have mentioned, chain and sprockets, brake pads, etc.
Then you also have the BIG issue of a 30 year break in riding.
The strom is quite a top heavy bike and can catch you out moving it around.
I see a lot of “born again” riders over here who yearn for their yoof, want to be a weekend warrior so buy a Harley, then find it's way too much for them.
My suggestion would be at that price, as long as the condition is good, then spend the savings on some rider training.