Help me Calculate hydration for this bread

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I've always just gone by feel in the past ... and always had great success, but now that I've joined this forum and see that you all weigh ingredients and calculate hydration.   I've started weighing but I'm confused about how you calculate hydration with ingredients that are somewhere between dry and wet.

This is a sandwich style bread I make in a loaf pan and it always has very nice, soft texture for sandwiches.  But depending on how I count things like baked potato and honey and butter - the hydration could span a wide range. I'm guessing it's around 70-75% but hoping someone here can tell me so I know how to answer when people ask me what hydration I use :)

Dry ingredients

260 g fresh milled Hard Red Spring Wheat
10 g non-diastic malt
10 g dry milk
7 g salt
4 g diastic malt
12 g yeast

Wet ingredients
200 g water
45 g butter
45 g honey
12 g liquid lecithin
35 g leftover baked potato