AZ, This is what Steve wrote when I asked him about my 28” draw length....
At 28" you can go either way. Personally, I like longer bows but that's me. You can generally go shorter with a reverse handle because the limbs are closer to you when you draw. With a standard handle design, the limbs can be up to an 1 1/2" away from the palm of your hand. With a reverse handle the limbs are in the palm of your hand. All things being equal, you don't stress the limbs as much with a reverse handle. So to compensate for that, I suggest you go 2" shorter. In a standard handle design I would build you a 66-68", so in the Whisper or Sprague I'd go 64-66". Again, if I was building one for myself I'd go 66". I just like longer bows.
When you think about it, the difference is one inch on each end of the bow.
I hope this helps.