I think you know how I set mine up....
about 4.5 feet of 20lb maxima davy knotted to about 4.5 feet of 15 pound maxima mono. From the 15 I put the sighter, and then from the sighter straight fluoro 1.5 to 2x depth of water. I think if I was using a 10 foot rod, I would increase the length of the mono behind the sighter to about 5 foot each.