I'm looking into getting into AoS for third edition and CoS is one of the factions I'm considering, I love the idea of a magic and technology faction and my idea for it would be a magic heavy army consisting of battlemages, celestial hurricanum/luminark, phoenixies, endless spells, (LRL stuff like Teclis or something else if I'd go the settlers gain route) (maybe stormcast wizard since the comet looks so much fun) and for tech part it would be stuff like outriders with grenade launchers, handgunners, steam tanks, gyrobombers and artillery.
I dunno which city would be the best for this idea, the phoenix city looks good, hallowheart is probably the best, settlers gain looks good since I'm up for LRL stuff, the city that makes grenade launcher outriders battleline also looks very appealing, if I could make like a very mobile army of them + luminarks/celestial hurricanums and maybe gyrobombers/phoenixes that sounds very fun.
What do you guys think? Think CoS with the way I envision them be the faction for me?