When I coiled mine I moved the front forewards about 2 inches, it made for much better wheel travel into the arch.
Then I moved the back axle backwards about 9 inches, and it rode like a limo on the road. (well, a limo compared to usual suzuki standards.....)
I believe the guys who move onto jeep leaf springs find the front axle has moved forewards a few inches.
If you get the prop extended instead of using spacers, you'll find it gives the joints an easier life, and then you can focus on getting more flex out of it.