Hey there, what do you mean by staking?
I cannot be sure if the wallet will be out before the end of the TGE or not as there is no end date currently.
Will be good for you to have a read of the whitepaper here https://www.zerocarbonproject.com/wp-content/uploads/2018/07/Zero_Carbon_Project_White_Paper_v3_2018_07_18.pdf

And this article https://medium.com/zero-carbon-project/zcp-update-5th-september-zero-carbon-projects-utility-token-review-a-deployment-update-and-our-2a902d66fab6