This is fun, plus it also gives you something to shoot for. This would be the base routine that you plan to use for the season. Finally, prepare one routine with skills you can make all the time. This routine is for when you feel terrible, the equipment is lousy, or your team needs a solid score. You may not use this routine often, but it is nice to know it's there.
Some kids panic a little at meets, so it is good to have a safe routine ready if needed.
You will obviously have set choreography, so the only changes you will make would be on a few skills. For example, let's say you have three main tumbling runs. Your last pass might be a double full, a full or a layout. Your tumbling series could be three versions combining flip-flops and layouts. You can apply these ideas to every event, for guys and girls.