My shamans ara 63 and my DK is 62, but I basically just use /castrandom for now. Once i get higher and get the rest of my abilities, I wanna try out /click. but for now, /castrandom and rapidfire spamming works for me. I just manually add a few DK spells as needed.

At least make one button for that, and make it an emergency fallback while you figure out the ideal setup. I like panic buttons.