Also I have a suggestion : You should be set for the logo and symbol before release. I follow a lot new coins like Q2C and such processes are ectic once the coins pick up speed. This would also entertain us before actual release and I think the earth logo is a great start but we could add to it !?
Just my two worldo.
As in a logo/symbol competition?
Yes. I don't know when you plan to release the coin, but two weeks prior I'd put a bounty out of the pre-mine. People put up their suggested logo and you do a quick poll.
If not you end with like Q2c where the community voted for a blue Q, but the dev scanned through a couple of pages and picked a cube. Or Frozen which logo wasn't the community's favorite back in the days.
A strong logo will help your coin. I don't have skills to help you graphic wise. When I want a logo for business purposes I pay 30 bucks and go to reddit.com/r/forhire .
Also, I think your plan beside that is pretty good especially for the beta. Please check out what maxcoin has done and try to do exactly the opposite. Everything should go fine.
Edit : If you find a decent logo I can help you out putting up a WP landing page or a full website. PM me.