Protein bars and meal replacement bars are a great way to get in more calories as well. Also, make sure you are eating a hearty meal with both carbs and protein within 2 hours after your workouts. This is the best time to build mass and to recover. It's not necessarily more calories from protein that you need, just calories in general.
You are correct about the drinks you mentioned being for recovery. They are great products and work well, but in your case I would use food rather than drinks to recover.
I'm not positive but I think Tim may have misspoken about the "medium reps" range. I'm going to check with him but I would recommend 5-8 reps for you and would consider that "medium reps". Longer rest periods (up to 2 minutes) can also help build mass.
Definitely minimize the long cardio sessions and try adding intervals as well.
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Kim Wathen M.S.
Exercise Physiologist/Dietitian/Personal Trainer
kim@fitnessandfuel.com