No, it isn't. Go ahead Paul.
Just one thing... i would love to see your game when it is finished. Can you let me know when it's done? :)
regards!

Question 1.
Sure, re-use it in your projects. Make changes if you want. If you got the chance, mention us :D ... although is not necesary :)

Question 2.
About the free animations. Sure, share them if you want. And yes, treat them as under CC0.

Good luck with your games my man! :>
Regards!