If the barrels are sound you have a good start. 26" barrels are a little out of fashion these days but aren't doubles as well. If your stock can be repaired to a good pattern for duplication I would give Weinig a shot. I had several semi inletted stocks done by them before I bought my own duplicator. They did good work and deliver times were fairly fast.
You need to come up with what over all level of restoration you are after. One extreme would be a factory fresh level of metal and wood restoration. The other extreme could be only repairs made to make the gun safe to shoot. I suggest some where in the middle. New stock with decent color but not exibition burl, metal work repaired but not re-case colored, barrels rebrowned with soldered choke tubes installed to give useful chokes or leave as is for clay targets. You never need to feel guilty for crippling a clay target because you chokes are to loose for a clean kill.
Above all have fun with the project as time and money can get too important sometimes. Take pictures so you can look back on where you started and how and where you end up with a project. And understand almost every project takes a few turns along the way. Enjoy the ride.