Enchanter C3 is very underwhelming at the moment. While 5 extra levels on Lightning Hands and Enchant Lightning may seem tempting, the extra damage they offer doesn’t really justify going C3.
Enchanter C2 is good enough to gain access to Lightning Hands. Since you’re going full SPR, I suggest squeezing in Linker C3. Lifeline’s stat sharing utility far outweighs the measly +127% gained from a Lvl 10 Lightning Hands (Lvl 5 is already a decent 503%). Simply partying up with a DEX archer would turn your wizard into an auto-attacking machine, and hey, let’s not stop there, say there was an Exorcist, or maybe an Elementalist sporting a Full INT stat spread, you’d be hitting with around, at least, 1000 more matk just by activating Lifeline.
Aside from that (as if that wasn’t a sweet enough deal), there’s also Spirit Shock which gains a magic defense reduction attribute at C3, which will boost not only its own damage, but Lightning Hands’ damage output as well. This attribute easily outclasses the boost gained from a Lvl 15 Enchant Lightning. You’d have around a +500 additional lightning property damage boost gained from a Lvl 15 Enchant Lightning versus a Lvl 10 one (it’s really not worth it).
And if those points weren’t enough to deter you from going Enchanter C3, Over-Reinforce is just a really expensive (costs 2 rounds per cast) +600 atk/matk buff that only lasts a minute (and that 1 minute duration is after buying its overpriced duration attribute). To put it into perspective, a Swell Left Arm from a Thaumaturge with a respectable amount of SPR would net you around 1500 atk/matk for 5 minutes.
As for the Agility attribute, it’s actually pretty cool to gain a +5 movespeed buff. That is, until you run into another Enchanter in the same party using that attribute as well. Only one Enchanter would be able to have this movespeed buff (though that’s just a pet peeve of mine, I guess).
Also, I’ll just keep pretending that the new Enchanter Rounds don’t exist until further notice.
TL;DR?
Wizard C1 > Pyro C1 > Linker C3 > Chronomancer C3 > Enchanter C2
Though I’d love to be able to squeeze in Sorcerer C1 just for the Aoe Attack Ratio buff, there’s just no room for it. You’ll just have to make do with some cat scrolls (if they exist, I’m not really sure).