If you really wanna drop someone for Wampa, go for Palp, Vader, Tarkin, Thrawn, Wampa (so, drop TFP)
but as others said, it's not advised.
what to expect when going against Wampa? If you don't control him (ability block, cd increase, stun( opening turn your team gets dazed and he gets protection.
he's kinda tough, hits on the hard side and likes to counter. He can stack offense. Not really fast, but his basic can gain tm (which can be scary if he's countering a lot)
Usually, when Wampa is in arena, he just gets controlled as the rest of the team is wiped out. Then he dies.
You are at a rather low level, so it might work