Disregard the milk issue unless milk makes you sick. For something fairly short term (several months), it's fine.
I don't do all that well with milk, but I put on close to 20 lbs in about 3 months drinking only a half gallon/day along with another 3500+ calories on top of that.
If you're 6'0" and 135 lbs... why aren't you doing Starting Strength?
And if you don't think kettleball squat cleans are difficult, I say, step up to the med-ball
- CJ Kim