I am learning to stand on hills... or rather to "master" standing... you haven't mentiioned whether you stand as part of your strategy to conquering hills...

Get into a low gear on the hills, and the moment you feel like you need to change down, don't. Try standing for a while and you will be able to keep your cadence without changing down... but if you haven't done much standing, than I suggest you don't try it in the middle of a big hill because when you sit again, your legs will feel very tired.

But with practice, standing becomes a useful part of the repertoirre, and certainly means I am starting to move up hills more quickly (not a lot more, but every little bit helps...)

I don't use a triple chain ring, so I can't really offer suggestions for that. I am always in my small chain ring when I begin though...