This is easy -
For 5 weeks, set PR's, work up to Jokers if you feel good.
1-2 assistance movements per workout.
Last week before the meet, hit 85% of your TM for a single on all three lifts, last workout being on Wed.
As for you estimated max and all that - as I've said before the estimated max is not a predictor of what you can do, rather it is a way to compare rep maxes (see the original 5/3/1 book). You have to base your attempts on what you feel you can hit, not what a formula says you might be able to do. Since this is your first meet, I highly recommend opening low and being smart in your attempts. There is no need to go for broke on every attempt. A meet, for many people, is much different than just going to the gym. So be prepared.