It will take as long as it takes.It will depend on the time and effort you devote to it, both in terms of quantity and quality.At 22, you may find that other interests compete. That's true of most ages, of course, but the early twenties are particularly vulnerable to it.What's the rush?
There is no rush, I was just wondering in general what is reasonable. Anyway, do you think my age will be a problem when it comes to developing the technique needed to play those pieces even if I am devoted? I simply just wondered if three to four years sounds reasonable or a bit too optimistic...
+: You have a motivation and are so desirous for improvement that you ask pointless questions.-: You are distracted.
you should be able to learn the four Ballades in a matter of weeks, rather than a matter of years....