Potential logo for the Montreal WordCamp 2017

Hi, Dribbble! Would you guys please help me by voting and commenting on these?
The main purpose of the logo is to serve a WordCamp event (a conference that focuses on everything WordPress)
It is purposely inspired by Montréal Expo 67, as the city is celebrating the 50th anniversary of the event this year.
The inspirations from the Expo 67 include:
- The Biosphere, Habitat 67 and The Spirale at La Ronde
- The typefaces Helvetica Bold and Optima Medium
- The Expo 67 '2 men' symbol
- The colors

You can also find, of course, the WordPress.org logo.

I've been working on this as the only designer in my team and will appreciate the feedback of this community!
THANK YOU!