We are going to Vegas next weekend and would like to stop at Mojave national park. We plan to start early in morning around 4 a.m from San Diego so that we are in Mojave by 12. What is the best route so that we can spend few hours at Mojave before we hit towards LV? Should we take exit at Baker exit at 15 or take 40 via 15 and then enter Mojave? What all can we cover in Mojave in 3 hours? Any other tips? Thanks.