1.
Valacirca: Bringer of a heavenly harvest?
2.
Langflood: Commonly said to be the longest bearer of the One Ring.
3.
Quendi: Named speakers.
4. Remove first letter of alphabet poorly.
5.
Tall: Lofty Elven title.
Correct on #5, Finwe. The Elf was Maedhros.
#4 shouldn't be so difficult. How many words are there for alphabet in Tolkien's works? And how many of those words make another Tolkien-related word when you remove the first letter?
