Thanks for contributing to Parf Edhellen!
There is already a suggestion for breakfast based on the same idea: arinwat ← arin + mat used in the Neo-Quenya New Testament and by Tamas Ferencz. Do you feel like armat would have some advantage over this word?
Also your gloss and group are not the best, I would suggest to have “arin + √MAT” as the source and ‘Neologism’ as the group (as it doesn’t actually come from the Quettaparma Quenyallo wordlist)
gilruin