Re: LUKS encryption at partition level or LVM?
easiest way is to make a single crypt, use the crypt as a PV , then make your LV.
This way you have separate partitions (as you wish) within a single crypt. The advantage is you would only need to enter your password once as you boot.
If it is not broken, tweak it... If you break Fedora you get to keep both pieces :p