First of all, hello and welcome! I love Black Jack's paw print pic, it is soooo cute! I wonder why they think st in him, I can't see it, but maybe they saw the mother. He sure is a cutie pie.
As for the food, I have no problems with free feeding, provided they aren't eating too much. In fact, I find this the preferable way of feeding (although I can't do that with my current two, they would be blimps) If you have a wolfer, free feeding is probalby not a good idea.
As to how much to feed, it would depend on how big he is, and how big they expect him to get. I free fed my female originally, so I dont' know how much she was eating at that age. I didn't have Gunther that young, but at 12 wks he was getting 9-10 cups (cut down when I realized he was gaining weight too fast) As long as he doesn't look too bloated or gaining weight too fast, or not enough, you should be okay with what you are doing. You can probably cut down to 2-3 times a day as he gets older.
I would love to see more pics of him, which I'm sure you have. Post away!
Oh, btw, my name is Chris, and I am currently owned by Keiko, a husky/shep mix, Gunther, a great dane, and soon to be 2 rat terriers, Posey and a yet undetermined male.