11-34t is a common choice for touring bikes. I myself ran this setup for a long time.
In the future when your chainrings wear out and you need to replace them, I suggest going for a double chainring setup. Triple chainrings are unnecessary weight.
c'mon, man! it's a couple of ounces of weight.
honestly, i've never been out on a loaded tour and thought........................
"gosh, if only i had fewer gears!"