1) It's already flexible, 5 rows full screen, <1024px will be 3 rows, and <768px will be 1 row only... is it not working? I'll check it out...
I just checked and now i see flexible rows, maybe last time i checked when you haven't publish the update to your site or the web cache wasn't updated.
Oh yes sure, it happens to me all the time haha... glad it's working ufff...