Sounds very old school bodybuilder. Reg Park (google him) loved full cream milk, steak and eggs. What would now be considered a heart attack diet. Of course the quality of food was much better back then and they didn't eat stuff like lollies and other highly processed foods.
The only possible problem I can see is that consuming so much dairy can amplify your lactose intolerance. I would therefore only recommend doing something like GOMAD for a short period of time like mrRed.
If you do decide to do it, make sure you keep track of your stats so we can all see!
