Just a note on calves. You can use a squat bar to do calves or you can hold a dumbell in one hand and step up on something, (like a step or a machine that will not fall over on you) let your heels hand down and lift up and lower, repeat until you finish your set. I had to learn these tricks b/c my gym doesn't have any machines for calves.

About potatoes; I think the equal portions of carb/protein helps maintain balanced blood sugar levels.