do the sure things first

I planned to put in an order to buy FUEL at open. 15 mins before open,
I'm reviewing some charts and trying to decide which short play I'm
going to do. As I'm entering my short, I notice it's 8:30, so I put in
my buy limit order for FUEL, but it's already passed my limit. So then
I upped my limit and got it like 1% higher than I would have just doing
a pre-market order. Not a big deal, but it was a stupid mistake.