Your shins are a little too vertical in the squat. Let your knees assume a position slightly in front of your toes by about halfway down. Also, your stance may be a tad wide, but I cannot say for sure. I would not stop training everything just because your elbow is bothering you. Do what you can and they will likely heal in the context of you getting stronger. Put in a light day on Wednesdays and see how things go.