Whey is just a protein, usually whey protein is very low in calories. So what this dude need is High calories protein. Yes you can take Whey but add in with some waxy maize starch or maltodextrin. Those are pure carb and calories. My suggestion go for a weight gainer or eat like a bull + gainer supplement

Same goes me and my friends....

For post or anytime that you prefer to take, maximum for a person is 1 1/2 scoop, so its around 37g. Why I stated max per serv for a person is 1 1/2 is because our body can only absorb from 20g - 30g plus and the balance you'll pee it all out. Some people will absorb more, some absorb less. Have you ever taught that all Whey Protein like ON, Nitrotech, Whey Pro, Pure Pro, Cluth Whey and etc only contains 20g - 30g per server. That's the reason why.

You don't bulk with Whey Protein, you bulk with gainers or calories. Is either you add in extra carbs in your diet or get you self a gainer. Yea, protein and creatine is a good combo, but you'll get bloated with water. Its alrite, once you finish the creatine you'll be ok