So me and a buddy are planning out a trip this summer from Vancouver down to San Francisco. Then we want to drive to Phoenix, AZ, and then up to Vegas on the way back. I planned it out on mapquest and it said a total of 56 hours and a total of 3263 miles. We are both 19 so we wont spend too much time in vegas on the way back, more just for the sake of going. How long should we plan for? i was thinking along the lines of 3 weeks or so. is this enough time?