With a shoot draw bow should i stick with fixed blade broadheads?

Your draw length doesn't really have a factor here. The main thing you didn't include is the overall weight of your arrow and head together. If your arrow is only 200 grains and going 260 fps or if it is 400 grains and going 260 fps there is a big difference in the kinetic energy. If you are using a very light arrow I would stick to a fixed blade. If you are shooting a 350 grain or up arrow and head then you would be fine with the expandables. I used the g5 t3's this fall on a cow elk. I had no problem with penetration. The idea behind a rear deployment blade broadhead is they won't deflect on bone or angled shots. As far as not opening there is always a small chance that could happen. I really do like the engineering behind the new t3. I can't find a whole lot that will actually cause them not to open. That is one very good function of a fixed blade though, it will always work.