WHM would be more gamepad friendly I think. I have both at 60 and am AST main.
If you're having any issues with targeting, I strongly recommend this guide; http://www.ffxivrealm.com/guides/con...-targeting.71/

My crossbars are set up in such a way that I have 2 full crossbars that are duplicates of each other, where I never lose access to my urgent and/or emergency skills, while swapping out some lesser used skills for DPS abilities on my second crossbar. tapping R1 gives me these 2 crossbars only. My skills like Assize and Asylum and potions are on the half crossbar that you can setup to appear when holding R2 + L2.

Those are the only crossbars I have available to me when my weapon is drawn, and are specific to each of my jobs. When weapon is sheathed I have access to world-crossbars (teleport, chocobo, gearsets, etc) which are used for out of battle and are shared among all my jobs. Everyone has their own way of handling crossbars, it's good to experiment.