I'm fairly new to the game, and I'm having trouble deciding on which 4 champions to fully develop (60, 6-Star) for a Classic Arena offense team.  I'm currently using Doompriest, Romero, Shaman, and Ripper, but I'm not sure if that's the best combination of my champions.  These are my rare and epic champions:

Epic: Doompriest (support, force), High Khatun (support, spirit), Hordin (attack, magic), Jizoh (def, spirit), Pestilus (support, spirit), Relickeeper (attack, force), Ripper (attack, force), Romero (def, force), Shaman (support, force), Uugo (support, magic)

Rare: Apothecary (support, magic), Athel (2) (attack, magic), Cataphract (HP, spirit), Coffin Smasher (HP, magic), Conqueror (2) (attack, spirit), Dagger (attack, void), Diabolist (3) (support, magic), Elhain (2) (attack, magic), Executioner (def, magic), Goremask (attack, force), Graybeard (def, magic), Kael (attack, magic), Seducer (def, void), Soulbond Bowyer (2) (attack, spirit) Sorceress (2) (attack, force), Spirithost (support, spirit), Valerie (2) (support, magic), Warmaiden (attack, force), Warpriest (support, spirit)