It all depends what you really want. If you want to ski at your peak and be able to do everything you have ever wanted to do, ski as much as you can in your 20’s. if you would get more enjoyment out of working and earning enough to secure a comfortable future in your 20’s, go for it.
Most people that ‘only want to do a few years of work to get some savings’, they blink and suddenly they are 40 with responsibilities, a family and a mortgage and can’t believe where the time has gone.
One of my Dad’s friends retired after working his ass off for 40 years to secure his retirement only to have severe health problems soon after that meant he couldn’t do anything but lay inside until his unfortunate demise. On the other hand he also has a friend that worked super hard from 20-35, sold his business for a couple millis and now skis 100 days a year and pretty much does whatever he wants.
TL;DR there is no ‘right’ way to do it, just go with your gut feeling and what feels right at the time. If you trust yourself, shit usually works out. Luck also is a small part.