It's a lot of sleeping kit. I only took a foam mat, bivvy and silk liner + down jacket.
I could have done with a sleeping bag on two nights but mostly wouldn't have used it as warm. But depends if you get cold when you sleep, etc.
I've never taken a sleeping bag but have suffered poor sleep (I get very cold, even with my natural insulation). I was tempted to try Lael's method which is just to take a sleeping bag and throw that straight down but I reckon sans-pad a lot of heat will be lost to the ground.
It's a lot of sleeping kit. I only took a foam mat, bivvy and silk liner + down jacket.
I could have done with a sleeping bag on two nights but mostly wouldn't have used it as warm. But depends if you get cold when you sleep, etc.