Rather than using a more expensive yarn, I found a similar weight at Michael's for $4/skein. I was a little nervous about how much I'd end up using since the skeins weren't the same size, so I bought 8 and ended up using 5 (hoping that I can return what I didn't use!). After looking up a couple knitting abbreviations it was quite easy to do. It's knit from the top down, so it doesn't require seaming pieces together at the end.
Next time I may decide to make the body a little longer, and the sleeves a little longer with a bigger section of ribbing on them (like on the bottom). Can't wait for some cooler weather so I can wear it!