I would promptly order some weightlifting shoes while you have your credit card out. Your grip looks fine so I would not worry about the shoulder pain unless it persists or gets worse or both. Yes you should be looking 3-5 feet in front as recommended. You can lift your chest up when you get set under the bar to avoid the upper back rounding but when you are doing the set you should be focused on keeping your chest down. Which applies here because you are lifting it on some reps and not driving up with your hips enough.