A study in the Journal of Strength and Conditioning Research revealed, “WPC ( ± to ± ), Beef ( ± to ± ) and Chx ( ± to ± ) each led to a significant increase in lean body mass compared with baseline (p<) while the control condition did not ( ± to ± ). Fat loss was also significantly decreased at 8 weeks compared to baseline for all protein sources (WPC: ± to ± ; Beef: ± to ± ; Chx: ± to ± ), but not the control condition ( ± to ± ) (p<). One repetition maximum for both deadlift and bench-press were significantly increased for all treatment groups when compared to baseline. No differences in strength were noted between conditions. Overall, the results of this study demonstrate that consuming quality sources of protein from meat or WPC lead to significant benefits in body composition compared to control.” The study looked at the effects of beef, chicken, or whey protein post-workout on body composition and muscle performance. The study was based on 46g of protein a day, meaning one serving of this shake covers half the daily requirements. 
Coconut oil should be all over your daily menu. If you ever make smoothies, it’s an easy way to pack an additional 117 calories per TBSP. What I’ve been doing lately (since I’m also on a mass gain program) is making a bunch of white rice, mixing 1-2 TBSP of coconut oil in, adding a sploosh of rice vinegar to blunt the insulin spike, and then topping with a ounce can of wild-caught salmon ( here’s a good bulk Amazon source I like, or here’s an alternate ). That’s ~800 calories right there, and ~45g of protein.