I personally would do C Mel, C Kiril, Mist, Uraeus and Proteus in that matchup. Unless you have C Gormek?
Edit: Tried out this team myself against a roughly equal team to the one you faced. Spent about 200K in ham looking for a Freya in classic formation and failed, so ended up testing out an alliance mate’s defense.
I actually won 5 in a row using this team but I didn’t press the record button for the first 4.