With focused, deliberate practice, I'm hoping I crack the electric guitar in 5001. :) But seriously, I know it's the journey that's more important - the heuristic really does give me confidence when I look at where I am and where I want to be.
If you can get a skilled spotter, or a coach who knows his/her stuff, nothing like it! I have to rely on myself unfortunately, and am very grateful for the super materials that I've found for learning the guitar. Like you, I am focusing on the fundamentals and patiently letting my skills build up. 2 years into it I am happy to say that it's looking good!