space and weight savings imo is not worth the squeeze and cost to evacuate and recharge the system.
you said you have a 5k btu ac in the back??? back of what?
but hey its your rig. do what makes you happy.
Won't cost that much to evacuate/recharge the system. Even though it's not really that much extra space. It's well worth it to me. I'll more than likely cut the roof open and build a pop top, so I can stand in it.
I'm installing a 5K BTU A/C in the back of the expedition. I'm going to cut a hole in the liftgate and install it in it. I'll loose the use of it, but I will still have use of the window. Which works for me.