Replying to I'm torn...

I have a serious dilemma, here's the scenario.

My cousin called me about a week ago asking me to be a groomsman at his wedding, which is taking place this Friday. He is getting married to a girl who is 19 (I think he's 24), and they have a baby together who is about 6 months old. One problem is that he told me about the wedding on pretty late notice, so plane tickets are maaad expensive (SLC).

Im torn because I have a two jobs, and flying out would force me to miss 3 days of work from both jobs, and I just got back from 6 days of vacation.

The wedding is very small, and I would know probably know only about 5 people there (all family, and my cousins older sisters fiancee).

I am soooo torn on whether or not I should go,

Help me out, should I go or no?