If your Northern Brewer were really 4-4.5%, you've got about 33 IBUs, within the range of 20-40 by style. If you hit 1.052, BTW, you've also got around 79% efficiency, if I ran this right. [edit] I didn't - 'cuz I left out the 1.5 lbs of sugar...closer to 58%...[/poor math skillz]
Northern...