Question for those who use the hd default hotkeys

I can get used to the default binds, as many suggested to do. My only question and concern is this; some of the go-to building binds are an almost impossible stretch, those being the market, mill, siege workshop, stable, university. (Ctrl+ I, Ctrl+K, etc.)

I'd imagine you'd change those? If so, what do you generally switch them to as I do not want to mess anything up, since I could possibly take up another key thats already bound.