So I switched to 3/8 in elastic, pulled out the serger and conquered the elastic in less than 40 minutes. I'm in love with my serger by the way. Until it started to eat the arm hole... a little fussing and adjusting elastic though and it's all ok; it won't be visible once the outer bodice is on anyway. I just stitched the elastic once and will do the second stitching on it when I attach the bodice so that the seams look a little more finished and there's not a huge bulk of thread.
I serged all the seams and now the bodysuit is almost done! It still needs some more snaps in the crotch but then I can get started on the fun parts- the parts you actually see! I'll make an official blog entry once the bodysuit is completely done but I thought I'd give an update.
Next step is either going to be cutting out, serging and hemming skirt pieces or working on the bodice pattern and getting it fit just right. I haven't decided which, skirts are a lot less thinking than bodice so they might win seeing as I have a midterm next week.