yessss !Depends how it's done. All of the girls together...yeah no chance that will end well, not to mention the headache for the MC.
If you choose some some LI's for counselor/adviser positions it could go well. And would lessen the work for the MC, can't do everything yourself as king.
Like
Estrid - military
Lydia - trade/economics
Valentina - PR
Casia - entertainment (her zoo could be fun, in the arena)
etc.
Except she is also a foreigner and a slave on top of it, at least Estrid is a princess and brings a alliance with a powerful country.
Also all three factions already said, yeah Estrid is fine, so...and if not, the MC's soldiers can make themself usefull.
Any more objections...good
wife ministers !
Aelinia/Lydia queen/royal advisor or province management and policies (depending on your chosen faction)
Valentina intelligence (she is the only one we can trust for now)
Diana trade/economics
Cassia/Isabella entertainment and fashion
Estrid defense
Flora/Kaylan/Eliana infrastructure + workers
Dinah education
Helena retirement
Alessia postal services and parcel delivery
Marius wokeness campaigns
Rashida and Juliana are still on hold until new ministers open