I bought a Speedy B 30 DE a few days ago and I am wondering if it's big enough. I was lucky enough to get one MIF and with NO gaps at the ends of the zipper. I love it, just want to make sure the 35 isn't better. I am 5'3" and plan to occasionally use the crossbody option. I felt the 35 looked a bit big carried this way, but the other ways of carrying it looked fine. What are your thoughs?