Here's a bunch of hooded baby sweaters that use US 8 needles. You mention yarn, but not yardage which is a big factor. On the left side of the page you can input the yardage you have.
Remember to not pick a pattern that doesn't leave you any extra. Gauges are all different and you could end up with not enough yarn. I hate how the pattern doesn't give you yardage. Gram weight is not fool proof way to tell especially if your using stash yarn.