WIsh they had the death penalty to bargain with....OTOH they want to be martyrs....Give em life! ...a small cubical with no furniture and no human contact would be good.....maybe some bread and water and a couple of slices of bacon twice a day.
Heck, they are both fatties. Put them on the Atkins diet.
Bacon only.
Forget life imprisonment - why make the taxpayers support someone who wants no part of their society? Take him into field, strap an explosive belt around him and a dead hog (nails facing in, of course) and send him on his way...IMHO...