I have a 1996 (I think) Trek 750 Multitrack that I purchased for $100 via craigslist last year. The previous owner swapped the flat handlebars for drops, and since it has a nice chromoly frame and all the brazeons to attach front and rear racks, I've been using it as a commuting/touring bike. I haven't done much touring, but I would like to do more, and I see no reason why this bike can't do it. I've been putting some money into it (racks/fenders/new stem/new cables/new chain/Brooks b17) which some might think it pointless on such a cheap bike, but I got such a great deal on it that I don't see any harm. If I eventually want to upgrade I can swap a lot of the parts/accessories.

I recently tried servicing the wheel bearings for the first time, and 3 out of the 4 cones are lightly worn/pitted. Cups are fine. The bike rode fine beforehand, and I didn't notice any grinding or other problems. An LBS was unable to order me new cones, and I'm not sure what my options are now. Is it worth going crazy hunting down new cones for an old/cheap hub? The shop was going to dig through an old parts bin to see if they have something that fits, but it seems improbable. I feel like I have a few options:

1) Reassemble the hub with old cones but new bearings/grease and keep riding
2) Go nuts looking for replacement cones
3) Buy a new wheelset

Anyone have any opinions?