I acutally dont use any macro for whitemage at this time. I am also playing on ps4. I use a main hotbar and another wich i can access through holding R2+L2. That means 32 slots and thats more than enough.

Hm, i think Aero+Aero2 isnt such a good idea, because you have like 5-6 seconds then where you cant heal. Well, i havent tried it out, but thats just my opinion.