Depends on what you wanna do, but you can spend most of your AP casting summons and buffs so if that's what you want to do, stats don't really matter other than being able to equip gear(int gear seems to have caster skills most often, since you'd want a little bit of int, but not much). Rest of stats would be memory/con/wits, whichever you prefer, you can spread stats on summoner since they don't affect damage. For other skill lines, Fire for Haste/Clear Mind, Geo for Fortify, Hydro for Restoration/Armour of Frost, maybe Aero 2 for Teleportation(can try to get a ring or whatever to get +2 with only 1pt or can just use the gloves you get and ignore that on this char). Can also use these to create surfaces if you want by grabbing the relevant skills, but that's gonna require a lot of memory to slot everything.
