I came here with the same question. For Alice, I'm looking at picking up the Ortho set for the second B key, but I'm also interested in the extra 1u Fn keys. Also need the Space Bars set for Alice.
Is there no R0 Del key in any of the kits? Del on the top row profile should be at least available in the accents kit, I'd imagine a lot of 96%/1800 layout enjoyers prefer it above the Backspace key.