Tapered array questions

Hi.
Interested in tapering an array of 10-12 small (3”) full-range drivers, for improved response towards the center of the array, which will be at ear level.
I searched the forums snd read Jim Griffin’s “,white paper”, and am leaning towards either a 3,2,2,3. Or 2,3,3,4 type connection of drivers.

The key here is that i wish to place a small treble unit at the center of the array.
Anyone have experience here and/or can give advice on techniques/resources?

Thanks