As you say it's a good fit and has a frame suitable for touring, then yes, it would make a decent touring bike. After you get all the components into mechanically reliable condition. After riding for awhile, you'll probably want to do some tweeking here and there to meet your personal preferences. Gear ratios, cockpit design, saddle, etc.
I guess you've already checked the integrity of the frame.
You state it was a discard, thus free to you. Congrats on your good luck. Pretty amazing find.