[Chris Fultz]

I think the answer depends a bit on what your goals and objectives for the trip are.

If the trip is meant to be a fun weekend, reward for the hard work of the season, etc. and more focused on the experience of the trip, then go with seniors, who are ending their FIRST Student career soon, and then others who have put in the most time. Make the trip a reward for hard work.

If the trip is meant to be a competive weekend where you hope to win the event, awards, qualify for CHP, etc. then you need a different approach. Make the decision based on who will be able to best support the TEAM performance at the event. Who are the best for the drive team, for the pit team, to talk to judges, to scout? Make this list and then add some others based on the reward stucture above if you can take a few more.

So, it depends on your goals for the trip.