I am going to go against the grain and state your openers should be as follows:
Your openers look like reasonable 2nds to me, then get aggressive.
Remember, in a meet it takes more energy to miss lifts than to make them. I mean this both mentally and physically.
At this point in your lifting career, I honestly think the second attempts you have picked are iffy.
You should walk out to your opener completely unconcerned about the weight going up. Your second should be similar, but requiring some intensity and focus. Your third should be a number that you are going to have to have your your head straight to get.
As you gain experience and confidence on the platform, you can start to figure out what works for you.
The bottom line is I would like to see you not get a hard lesson in the difference b/t a gym and meet lift by bombing, or having a 3/3 day at your first meet.
Nobody cares or remembers where you start. Where you finish matters.