Don't worry about your toes hitting the front wheel. That's called toe overlap. Very common, really. I'm 5'6" and have toe overlap on one of my bikes when I put fenders on it. You don't normally turn that sharply while pedaling. Doesn't happen. If you do need to turn sharply, you're supposed to put the outside pedal down and keep it that way anyway. I sure wouldn't not buy a bike just because of that.