Wait before changin axles

My cv joint is goin on the front passenger side of my svx. The clickin has'nt gotten outa control but it still noticable. My question is do i need to get these replaced asap or what. I won't have the time to change it this week and i'm supposed to take a trip down south of me 300 miles round trip. would takin the trip be a bad idea? Any comment or suggestions appreciated