I have a job that I go to almost right after school every schoolday, and most teacher workshop days too (it's at an afterschool program), and for the most part I can only make the team meetings on saturday and sunday. I still manage to put in a respectable amount of hours each week (usually about 20-30 hours in a weekend) for the team, even though I wish I could be in there more.
As for losing respect, I don't think it happened. This year I was elected as the team Student Project Director, I'm on the pit crew, AND I'm the primary driver, as well as MCing our Sponsor Night, I'm going to be speaking at the BAE Teams Unveiling on thursday, AND I'm delivering the Chairman's Award Presentation (deeeeep breath).
I'm not going to say I didn't want to do this stuff, but the team chose me because they thought I could handle it all...so unless they really don't like me and they want to cause me as much stress as possible
(lol) I think they respect me, at least to a certain degree.
Don't worry about anything, your team will be appreciative of the work you can do, and I'm sure they'll understand that you can use the extra cash.