I'd go with the vets. The white cap is nowhere for a sophomore.... four-five years, with some training from a veteran U who will help you with poise, rules, signals ....
Poise. You gotta LOOK like you know what yer doing.
If you really wanna white cap, practice your signals (all of 'em) in front of a mirror, regularly. Then go through the casebooks and headscratchers, but don't write the answer. Visualize what you've got, with the various officials reporting to you, with flags in various spots and players milling around. Role play the whole thing in your own head, then give preliminary signals, say what you'd say to the captains, say the instructions you'd give your U, then give your final signals.