Congratulations on your DD! Before you know it she'll be awake a lot more, so enjoy these snuggly newborn days.
It sounds to me like you're doing just fine. She is getting plenty of sleep during the night and day, so you have nothing to worry about devleomentally. There are lots of newborns who don't sleep like that! Do continue to wake her to feed though, as you certainly want any awake time to be during the day. For the night feeds, you can either change her half way through the feed to keep her more awake or strip her down so she's a little cooler to keep her feeding. That way you won't have to get up with her an hr later to finish the feed. My DD was a very sleepy baby and I had to wake her to feed every three hrs until she was about 6 weeks old!