How can I replace apples with peaches?

I have a recipe for a dutch apple pancake (basically sauté apples, make batter and place in pan, add apples, bake) that I wanted to try with peaches. However, my sister thinks it'll turn out too wet/soggy with the peaches. My thought is to use less ripe peaches or sauté them for less time. Will that work? Is she right? How can I replace the apples with peaches?