You made a good purchase and have a great quilt that will certainly work well at the rated temp. I pair my HG Burrow 30 top quilt with a 20 degree Incubator underquilt and can easily push past 30 degrees if I'm dressed appropriately. With temps around freezing I'll be wearing my silk long underwear, Smartwool socks and a down beanie or Smartwool balaclava. Make your sleeping clothes part of your sleep system to get you comfortable at lower temps. Remember to let the quilt rest for a while once it's out of the stuff sack so the down will fluff up and fill the voids.