User blog:Daoneandonly747/Help with Harder Content Squad

Hey everyone! I come asking you lovely people for help in creating a squad for things like raids, trials, Etc. I find in most situations they are pretty good, but in some of the harder content my team is getting obliterated.

So my current team is:Level 179, 176 cost* Angelic Blades Sefia, A (7) (Fully imped) (Leader) And for my inventory (so not including the aforementioned units): ==Fire== *Ulor, A (7)
 * Ember Charm Fiora, L (6)
 * Fatalshot Andaria, A (6) (Fully imped)
 * Thunder Savoir Shera,G (6)
 * Ice Legend Selena,A (7)
 * Claire, G (7)
 * Aisha, B (6)
 * Ruby, A (6)
 * Volarda, B (6)
 * Varges, L (5)
 * Seria,L (5)
 * Darvenshel,A (5)
 * Ulkina, G (5)
 * Alpha, G (5)
 * Lancia, B (4)
 * Lorand, G (4)
 * Ramna, A (4)
 * Orwen, B (4)
 * Vanberk, A (4)
 * Zegar, B (3)

Water

 * Tridon, A (7)
 * Medina, G (7)
 * Dean, A (6)
 * Rickel, L (6)
 * Belfura,B (6)
 * Elimo, A (5)
 * Rubeus, B (5)
 * Tesla, L (5)
 * Signas, B (5)
 * Noah, L (5)
 * Tiara,G (4)
 * Raydn,L (4)
 * Lucina,G (4)
 * Mariudeth, L (4)
 * Arius, A (4)
 * Eve, G (4)
 * Jack, O (4)

Thunder*Griel, O (7)
 * Deimos, A (7)
 * Rowgen, A (6)
 * Loch, G (6)
 * Rize, B (6)
 * Lucanna, A (6)
 * Gribe, L (5)
 * Esna, A (5)
 * Orna, B (5)
 * Bonnie,O (5)
 * Eze, O (5)
 * Falma, B (4)
 * Lodin, B (4)
 * Uda, A (4)
 * Garnan, B (4)

Earth

 * Edea, O (7)
 * Oguro, L (7)
 * Lance, A (6)
 * Gravion, B (6)
 * Ophelia, B (6)
 * Rosetta,A (6)
 * Quaid, B (5)
 * Elaina, A (5)
 * Lidith, A (5)
 * Zelnite, L (5)
 * Quaid, B (5)
 * High Elf, G (4)
 * Lugina, L (4)
 * Dilma, G (4)
 * Lin, L (4)
 * Nalmika, G (4)
 * Faris, A (4)
 * Tia, A (4)
 * Hatsune Miku, A (4)
 * Lucca, G (4)
 * Lario, A (3)

Light

 * Kira, A (7)
 * Len, G (6)
 * Maxwell, L (6)
 * Carrol, G (5)
 * Eva, A (6)
 * Sola, A (6)
 * Yujeh,B (6)
 * Heidt, L (5)
 * Will, A (5)
 * Hogar, L (5)
 * Narza, G (5)
 * Elmedia, A (5)
 * Altro, A + L (4)

Dark
Those are my units, so if you can tell me:
 * Ivris, B (7)
 * Aaron,L (7)
 * Zephyr, A (6)
 * Elza, G (6)
 * Semria, L (6)
 * Hadaron, L (6)
 * Gradens, L (5)
 * Ardin, A (5)
 * Duel GX,A (5)
 * Mangress, G (4)
 * Shida, L (4)
 * Lemia, A (4)
 * Zebra, G (4)
 * Logan, G (4)
 * Lunaris, B (4)
 * Eric, B (4)
 * Zergel, A (4)
 * Minfune, A (3)

Who should I raise, and how? Who is total trash and I should get rid off? And finally, What units could I use to make a great team for hard content like Raids and Trials

Thanks Folks :D