My DS used to do the same weird neck angle thing! Really freaky, but he seemed completely fine. Some day we'd wake up and he'd have managed to squirm across the basinette with his head tilted way back, totally asleep and smiling ocassionally. We'd always put him back straight though, lol.

As for the sleep schedule, it sounds fine, I find DS is sleepier in the morning than the afternoon, so he gets put back to bed an hour after he's woken up. For a baby that can go 3 1/2 hours before tired signs show up, that's pretty early. I'd love my DS to sleep a bit more!