That's all over the place from a touchtype perspective. 2nd finger? That's a pinkie. And you're supposed to use modifier keys from the opposite hand when available.

So it should be <move right pinkie to hold right Shift> <move left pinkie to hit Z twice>.

I honestly didn't know about ZZ, seems very convenient. :wq! on a qwerty forces the pinkie to travel all the way up to the top row, which is hell. On my home keyboard I use a layer for special characters, which helps, but still I guess I'll stick to ZZ from now on.