The units in the trading post will change soon and i'm not sure if i should buy gianna.
I dont have any artilerry officier.
Is it better fo buy gianna or should i get percis and start leveling her.
I dont have any experience with artillery officiers. are they important to have?.
It would be great to know if i should spend my demon crystal now or wait until the trading post offers new units.

Also i am pretty close to cc my entire team, which units should i prioritise to level up so i can awaken them?
The units that i have cc'd are:
Katie 50cc54 (gold soldier)
bashira 50cc50 (platinum archer)
valerie 50cc50 (silver mage)
alissa 50cc50 (silver healer)
iris 50cc46 (gold healer)
leeanna 50cc45 (silver heavy infantry)
cloris 50cc40 (gold witch)
caliope 50cc10 (silver witch)

special units:
alicia 40 (platinum royal guard)
raven 30 (platinum sword master)

not cc'd:
spica 50 (platinum archer)
valerie 2# 50 (silver mage)
leeanne 2# 50 (silver heavy infantry)
phylils 50 (silver soldier)
cypria 30 (platinum rogue)

Any advice would be appreciated