What the fuck is this?
Primals suck unless you have a bunch of limited/moon weapons and magna is only going to get better with the anniversary. It would be best to wait right now.
4 Love Eternals is optimal for a Zeph grid.
It's the problem with wind's best characters, they all have buffs on the normal multiplier. So you use enough daggers to reach the DA cap then a couple of xeno spears and magna weapons. The last spot is either the seraphic for earth enemies or the damage cap up spear from RotB.
No, you only start using Zeph at 3 Love Eternals.
All advice as to what you should use your summon's cradle on can be summed up to wait until the anniversary.
You won't be able to spark Ayer, Monkey isn't that great and Smug/Lecia/Nio is probably the best team for wind right now. With all all these things taken into account, you should wait for the anniversary to decide.
Agni sucks, don't bother with it. The Zhuque katana is always useful though.
AES grids have been better than f2p Agni since ultima weapons were added to the game.