If you run a Tubbs spring, fast burning powder, and an H or H2 buffer you will be fine w/o any trickery. It would cycle hard but... Whatever
If you run 1 load, and 1 load only, and want it tuned perfectly, go adjustable gas block and Tubbs spring. Adjust it so the bolt barely locks back on the last round. This makes for one heck of a dedicated, smooth shooting rifle.
If you shoot lots of different ammo, suppressed and unsuppressed, go with the Boot Leg and an OEM buffer spring.
I have the Bootleg. I really prefer rifles designed around the suppressor. Like an 18 inch with a rifle gas system or a 14.5 with a mid length etc.
That being said.... My main Coyote rifle is a 16 inch gun with a carbine length gas system, tuned to one load with an adjustable gas block and a Tubbs spring.
I really did not shoot the boot leg much. It has sat in the cupboard for years now. I remember thinking highly of it. I just bought it for another rifle that no longer exists.