It's a good start toward a successful system. If you don't mind my intervening on this topic, I have a proposal.
A new applicant should require a 33% approval of the entire clan populace. This is not to be confused with 33% approval of the entire voting populace. Remember, not everyone votes during every poll. This way, the voting system can grow with the clan.
I understand that changes are not easy to implement and these things take time. No rush. It's just that I have tried many approaches to a vote/polling system within clans. Some are more successful than others.
I am a retiring administrator of a clan known as |KoR| for another game. This clan started out with only 6 members, but literally grew to well over 60 members. Implementing changes and making room for new members became an everyday task for me. The clan is currently run by 4 administrators, 4 global moderators, 15 moderators, and 24 members. This makes for a total of 47 members to date. Clan members come and go and the numbers change every week.
So there, now you know about my experience with administrating a clan.