Welcome Michelle, SheScraps, Silver & Brendajos!
Diaper covers looks like such fun projects!
Best to do it as a second or third project, since it's a fitted object and it's hard to get sizing right when you're just starting out, and your tension has a lot of variation still.
Brendajos, I know what you mean, I'm knitting a large bag right now, and it's so heavy on the needles it's hard to carry around with me; although I manage! I actually brought it with me for a walk this weekend, and was knitting and walking around at the same time. It was one of those days where I really wanted to get some progress made on the bag, but it was too nice to not be outside and enjoying it! LOL.