Question on trading in Xbone and buying a bundle one

I have some leftover Gamestop credit, so I am thinking of trading in my xbone for $200 and buying the Xbox one forza 6 bundle. Just hope someone can answer a couple questions, please.

With the new console I can re-download games when I have my gamertag on it, and I have every game save already on cloud, right? (Paranoid about losing game saves or digital content)

Also, how does it work in terms of me being a preview member already? How do I get my new console to be a preview one?

Thanks!

Anything you have downloaded or saved to the cloud are attached to your account so you are good there you will just have to re-download that stuff again as I'm sure you know

As far as preview I don't know for sure and don't want to give you bad advice on that

Yeah from what I've heard all game saves are automatically saved to the cloud, as long as you've been connected to Xbox Live. Game saves are most important to me. As for preview I'll keep asking around.

Thanks for the response! If you need a preview invite or anything, let me know.