Youtube Embed and Adsense?

I have a 9gag.tv-like site where I embed the latest viral videos from Youtube. For each video post, I use Youtube video thumbnail from their API as a cover image, sometimes I take a screenshot directly from the video. I add an original title and a description with an average of 50 words for each post (video), this description describe what happen in the video, the author, the date and some other useful information about the video. The site have also other functionalities such as like/unlike, share on social media, comment, shares velocity graph, search in website.

I've did many researches about this subject, read Adsense and Youtube TOS. I know that Adsense requires textual content and some sufficient original content when embedding Youtube videos. But Here are my matters :

1. What's the height of "sufficient" orginal content?
2. Is my content enough for Adsense?
3. Will my account get banned if I display ads on this site?
4. Can I use Adsense on this website without risking my account?
5. If my account get banned, can I use my Adsense account on another website or use Another Adsense account on the same domain name (like business account or personal business partner account)?

Any help from experienced users will be highly appreciated. Thanks in advance.

P.S. My Adsense account have been already approved with this website submission.