What kind of grass did you plant?

tall fescue

If it was me, I would not fertilize now if you did a full application of actual nitrogen when you seeded (1lb per 1,000 sq. ft.). However, it may give the grass an extra boost, and it probably wouldn't hurt anything if you wanted to. Half rate would make sense, though.

Also, I think a lot on here would discourage the use of winter fertilizer. A soil test would tell you for sure what you need, but if you don't have that, a "regular" fertilizer, would probably be just great. What are the numbers on the winterizer bag?

As for the winter fertilizer later on...I was just going to use Scotts Winterguard fertilizer. 32-0-10. Not sure if it's a quick or slow release. I understand the a quick release is what I need when I put it down during that critical 2 week window. Will take recommendations.

That doesn't sound too bad. The last -10 (potassium) likely isn't needed but shouldn't hurt anything.