Chris wrote:
I am using the Minnesota State Horticultural Society's
"Minnesota Gardners Guide" and it says to use 3 to 4 pounds of nitrogen per
1000 sqft.

The 3 to 4 lbs. per 1,000 is correct, but that is PER YEAR. 1 lb.
should be applied in the spring and the remaining 2 to 3 lbs. should be
applied in late fall, preferably November. Over fertilization in spring
will lead to rhizoctonia (brown patch) and you do not want that.