Dont' blow off workouts. Dont' adjust the workouts. You don't know enough about weight training to change it up properly, and neither does your 19-year old buddy who played football a few years ago and has nice arms. I've been squatting 400+ lbs longer than your buddy has been alive, and Mark Rippetoe has forgotten more about weight training than I'll ever hope to know, so don't **** with the workouts.
I bet you're worried about your arms. I honestly would not worry about your arms just yet. I think you'll be surprised how hard your arms will get hit. Give it a few weeks, and if you don't have sore arms by the weekend, then add in 2 sets, 8-12 reps of low incline skullcrushers and 2 sets, 8-12 reps Barbell, EZ-Bar or standing DB Curls on Fridays. DO NOT ADD THE ARM WORK RIGHT AWAY. Give it at least a few weeks. I'm betting you'll learn what I learned long ago...that direct arm work is highly overrated and can actually be counterproductive at times.
גורם לי לרצות להשאיר את התוכנית שלו כמו שהיא :X