A really nifty way to generate a modest starting income (~30k range) is to loot the free sponsored offers (Shop >> Get more Credits >> Sponsor Pay). And it makes sponsors like Urban Rivals. Stuff like taking surveys and checking your credit score quickly adds your credits up to 200-300 in a day. Cash those in for packs/clintz.
Then you could either save up for Sledge (He is cheaper when it is near the end of a week where he is ELO banned) and switch Steve to a lesser 2 star like Larry or you could replace Sledge and Steve with some 3 star and a 4 star.
The Urban Rivals team is made by lovers of all kind of Collectibles Cards Games and Trading Cards Games like: Magic the Gathering, Dominion, Vampire, Yu-Gi-Oh!, Pokemon, Wakfu TCG, Assassin Creed Recollection, Shadow Era, Kard Kombat and Might & Magic Duel of Champions.