I'm interested in what this project might be, and I assure you that I can do this project well. Hopefully, you get to have the time to check my works out, perhaps I'm just what you need!
You see, I'm an animator who specializes in 2D and cartoons like this one, due to my studio experience and past involvement with a Nick Jr series. So, I'm no stranger to kids entertainment. I work on both Toon Boom and After Effects. Don't let my newness here fool you! ;D
Now, for the project length... 1 month is usually the standard for animated projects (motion graphics, anyway, with revisions included). While this is just an estimate, please be aware that it may be possible to finish earlier if things went smoothly, and might stretch past the 30 day mark if not. But... yeah, 30 days is the usual.
If you're curious, feel free to contact me here, or check my profile here for samples of my animations, or perhaps, Nick Jr for Dora & Friends: Into the City, as I was one of the many animators who worked on it.
Cheers,
TKP