One note on doing all of this in actual at-the-table play: use cards. Make (write, print, laminate, whatever) a bunch of cards, one for every maneuver you know. Of these cards, pick the five that represent your maneuvers readied when your character does their five-min-meditation thingy. At the start of combat, shuffle these five cards and draw two of them (or three with the Extra Granted Maneuver feat, which is practically mandatory) at random to see which maneuvers are granted. The rest of your five cards are withheld, and you get to draw another one each round, until all have been drawn. Then, you shuffle all five cards again to draw anew.
Using maneuver cards is really the only way to keep track of the Crusader's complicated maneuvers known-readied-granted mechanism, IMO.