I have a pretty good DL to me and use a 31" arrow (might be a hair over). If it's setup correctly you should be fine. What you have to remember is this; the longer the arrow the more deflection you will have. But with an arrow that is spined correctly, spec'd out to your bow's DL and poundagecorrectly (correct length, thickness, etc.) and if your bow is tuned properly, then you should be just fine. I wouldn't worry about length too much.