This is how I have done things leading up to every meet I've lifted in (6 total), so take it fwiw as some things may not work as well for you.
I wouldn't necessarily 'deload' the last two weeks so much as I would taper the overall volume of lifting. On the main lifts, my heaviest bench press will be 2 weeks out and it is generally somewhere in between what my planned opener and 2nd attempt will be. I do the same for squats, but for deadlift I will just go up to my opener and maybe do a couple of singles with it. During this week I cut accessory work roughly in half.
The week prior to the meet I work up to openers in the bench and squat, but will just do some light speed pulls for the deadlift in order to maintain a groove. During this week I usually cut back on the accessory work to a minimum, only doing enough to keep the joints loose. On Monday and Wednesday the week of the meet I'll do quick sessions both days where I go up to about 50-60% of my goal weight and do a single with it for each of the three lifts and that is it. I do this to stay loose.
As far as what to pick for openers, the triples rule is usually a good guideline for openers. For the second and third attempts, I think what is most important is to set yourself up for a good total -- that is unless all you are really concerned about is one particular lift. For the first meet, pace yourself so that you go 9/9.