So I just wanted to get some feedback:
From the perspective of a 6* sbb squad id probably run it as bb spam for everyday stuff, something like:
Zelnite lead
Elza
Elza
Faris
Lunaris
Zelnite lead is probably better than elza lead in most situations. Elza gets more bc's but zelnite gives hcs and the drop bonus too, and the quality of the rest of your units will be good enough to keep up the bb spam. Zelnite gives enough healing with his HC buff that it will get you through medium difficulty encounters without a healer.
Faris is a tricky one for you, shes got a 45% crit buff, which is really good, and fitting a crit buffer on a team really improves it, but you have a oracle, which can be painful to invest in, depending how you feel about that.
Farlon is an arena unit, you'd do better with other options in your main team. Hes amazing in arena though, one of the best.
Lunaris is nice for the status null+cure, and better than narza who only prevents with his buff, doesnt cure.
You can choose between Narza and Oulu(copra) for your half damage reduction unit, or level both to use in different encounters depending on element etc. Narza is probably better overall though as oulu is getting a bit old.
Elza is great and you might as well run 2 if you have em, you have options though depending what you like. You could run Azael but Oracle typing is sad, or get an attack buffer/weakness buffer or a different damager depending what you pull in the future;use the slot for healer, damage mit etc depending whats needed.
Rowgen is the best boss killer, so against a single target hes your sniper.
Lodin is a nice unit, with lightning element, that can come in handy but not really high priority. Yujeh has elemental buffs too i believe, though you might want to run grah instead for the medulla stat effect. You should be able to smash grah with what you have.(with enough cost)
Id say Elza and Zelnite are your priority to max out.