Time for tires. So whats the hot setup?

Time to put tires on the rzr. 2011 rzr xp900. Was thinking mongrels in 28x10x14 but I want opinions on what else you guys are running? I live in AZ and run lots of rocks and sand. Looks like with all my research that those are the lightest truc style tire but I could be wrong…

I need to pick up wheels as well so are bead locks necessary?

Thanks!