Hello and welcome!
Someone else will have specific recommendations regarding the refurbishing of your canoe, but I'd like to mention that Old Town seats are done with cane and not rawhide. Some Canadian builders used rawhide seats, but not Old Town-- cane is the tradition there. Perhaps someone along the way re-did the seats of your canoe with rawhide, and you'd want to replace that with cane.
However, here are my thoughts overall: Many of us who look for old canoes would rather find them in as close to original condition as possible so that we don't have to un-do someone else's make-do repairs. I think if your intent is to sell the canoe anytime in the near future, you'd be better off using it as-is and sell as-is and let the new owner decide how to approach the canoe. One might prefer to do a full restoration, but another might only want to do something minimal to get the canoe back into the water.
If you'd like to post pictures, you might get some more specific suggestions-- look in FAQs for instructions on uploading pictures. We begin to refinish canoe interiors by stripping it (as you would furniture) but this may not be needed in your case. If you are mucking-around with the interior, you'd need to re-canvas-- which isn't that hard but it's nice to have a buddy to help out. You would get help here in Forums if you go this route and there are books and videos--- I will be posting a video of a canoe-canvassing adventure later today.
By the time you've gone this far, you'll want to keep the canoe because it will look so pretty you'll want to show it off and enjoy it yourself.
Kathy