It's like playing with fire.
If you first choice is the first show to open, that's ok, no big risk here.
But if, for some time-zone reason, the first show to open is NOT the one you really want, then you MAY be scr*wed when the good one opens.
My advice would be to favor the one show you really want, then eventually go back to the show already opened ; at the risk of being already sold-out, for sure....
That's a risk both ways.