It seems to be a decent boat which could be excellent for singlehanding.
As stated by others above, the minimum would be to add
autohelm. My preference would be hydraulic, below deck.
Furling jib is pretty standard as well, to keep you off the foredeck when things get dicey.
Running lines aft is not such a big deal as others seem to think. Some well placed blocks and new longer lines can do the trick. Being able to reef from the cockpit is a big feature when sailing alone.
As for
price, it depends on your local boat market. In many areas, including mine, its a buyers market. You should pay what you think is fair, and is within your
budget. Whatever you think you might spend on upgrades and
repairs, triple that number and deduct it from the asking
price.
I recently
sold my boat for about 40% less than my original asking price, and I'm still pretty happy with the deal.