newborn traveling

Callie • Love my hubs and son(:
So my husbands best friend is getting married in Idaho on March 24th, and I am due March 5th. We live in WA which is about a nine hour drive. My husband and I both wanted to go to the wedding.. Is this too soon to travel with a newborn and for that distance? When we get to Idaho we would be able to stay with family we have there in a clean environment. Opinions/experience?