This is a difficult question to try to answer because it is so personal. You can't get any lower than 22 to 36, so as you say, the issue is the other two rings. Again, I assume that your front derailleur works well too and from the 22.....

If I were you, I'd just ride the bike as is. If you find yourself spinning out often, like when you are going down your volcano, then you are good. If you never spin out, then you might consider tightening your range by going smaller in the big ring or both the big ring and middle ring. But frankly, I can't imagine that you'd discern much difference. I wouldn't bother.