New to PS4 JB, I have some questions..

Now first of all, I'm sorry if this is a dumb post but I decided to JB my ps4, it was on the latest update (13.52) and I didn't and won't update to 14.00, I've disabled auto updates and internet connection from setting. Though it's my first time JB'ing a ps4 so I'm quite nervous so please go easy on me lol.

1-What will happen to the games I've bought and downloaded on my ps4, will they all be uninstalled as I'd have to wipe all data? Can I still keep the downloaded games?

2-my ps4 can't read disks so will I still be able to JB it when it releases using a USB maybe or through internet browser or should I wait more?

3-when is the estimated time for the official JB to release? I'm already seeing some links out there.

4- I keep seeing some DNS people are suggesting to block updates etc… what's the best one I should use and what does it do?

Thanks for anyone who gave his time to answer the questions!