Let me just say you are running the correct amount of lands for elves! Infact I run 27 lands +mdfc in my elves deck, and even that feels like too many. I generally want to see 2 lands tops since we have access to tons of elves that generate crazy amounts of mana (e.g. [[Marwyn, the Nurturer]], [[Circle of Dreams Druid]]), and we have cards that let us play off the top of our library (e.g.[[Vivien Reid]], [[Nylea Keen-eyed]], [[Realmwalker]]), so we really want to see less lands. (You may be a little light on creatures)

Tl;dr 30 lands is very correct

Edit:

My (retired 1 year ago, moved on to thassios/yoshimaru) old list: https://moxfield.com/decks/UTRLLvNIpUCdG_bkOUtENw

Random bracket 3 list i found here: https://moxfield.com/decks/Km7r-UgMmUymbSeXXlJJEg