MEX-LAX is a codeshare on MEXICANA so it is not allowed on your ticket. You only have 16 segments used, so you can fly on AA metal instead (e.g. MEX-DFW-LAX). You might want to add some more segments in NA. Otherwise the routing looks fine. Hope this is for an LONE5 as you seem to have picked routes that have no F and offer "lower-class J". Should be a nice trip.