Hi Austin.
Re crossing the Pyrenees. In terms of deciding when the time comes whether that’s for you - and if so by which route. I’ve walked and enjoyed both the Napoleon and Valcaros routes.
I see that most comments about difficulty focus on the climbing. While the climbing can be tiring for sure, the trickiest part for many is the steep descent, particularly on the Napoleon Route - see the elevations provided by
@Rick of Rick and Peg at post #9. That’s where the greatest care is needed -particularly if you are already fatigued. The last thing you want is a dodgy knee or ankle after Day 1.
This is not intended to dissuade you, but just to keep in mind in your decision making. Taking your time - and walking poles if you’re comfortable with them - will go a long way to keeping you upright and without injury - regardless of your years.
How exciting for you to be thinking about your first Camino.