So let me get this straight about the new upcoming humble bundle choice

The way I understand it, yes.

Can I pause my subscription?

Pausing your subscription is fine, and will not cause you to lose access to Classic for doing so. Only canceling your subscription will cause you to lose access to the Classic plan. Additionally, if your subscription is paused when Humble Choice has launched you will still be converted over to a Classic plan.

https://support.humblebundle.com/hc/en-us/articles/360036658733#pause

So far, that's the way it's supposed to work though. Let's see how fast they change that when they realize people are pausing too much.

When is Choice starting? If i sub for Yakuza will i get the extra games later? Or this is the month you start choosing the games.