It might be worth going to someone who can help you dial in the placement of your bars, and your seat etc. We all fit our bikes and aero setups differently, so what might be "optimal" for some, might really suck for others. It is also true that if you haven't ridden with an aero set up before, or ridden it very long, you may have to work toward "optimal". Last year I messed around a bunch with getting myself set up the way I thought I should be based on the advice of articles and observations. This year I went to a shop where someone helped me with the placement of everything. I'm more comfortable for it, and I'm not creating an air scoop with what I thought was the right placement of the bars.
Anyway, just my $.02. What worked for me, may be of absolutely no interest to you.