A blend of Whey and Casein with a Low GI carb source like Oats would make for a great MRP

And dont forget ur Fats, 5ml of Flavorless Olive Oil is a good choice, Ground nut oil, mac nut oil are all good sources aswell

So

25g Whey
25g Casein
100g Oats
5ml Oil

Looks good to me