Myself and 2 friend are planning a roadtrip from Arlington, Texas to Las Vegas, in the ideal scenario we wish for the trip to last for about 6 days altogether including stopover of 2 days in Vegas. We would also like to touch on a couple of National Parks on the way back including the Grand Canyon and Hoover Dam. Is there a preferred route for this and how long should we be expecting the total journey time from texas to vegas to be so we can plan stopovers(It would also be useful if anyone knew of any good stopovers). Thanks for the insight.