Standard sets for Aerials include 1 gun and 1 sword, similar to Assaults, just that Aerials have an easier time, well, being in the air and harassing panzers. They can also easily hunt down Busters, Fortresses and even Assaults if you know what you're doing and they don't.
Carts can usually be: +Movement Speed / -Boost Consumption under certain conditions (Depends on whether you want more speed or more time in the air), Boost Flying, Air Loop / Accele Roll (Although Air Loop is more commonly used), Lock-On Alert, and S rank Wall Jump is gimmicky but has the potential to be amazing for rapid altitude gain.
Spheres are almost always: +Flying speed (Try not dunking your boost). After that you can either do: +Main Weapon damage, +Sub Weapon damage, OR +Armor. Depends on what you're mostly going to be doing. Maybe doing Efficient Flight tunes would be good too but I Dunno aerials already have good efficiency, you could bump that efficiency up to Fortress tier.