Unfortunately, despite being the one a lot of veteran players have geared for his old Rancor team, Teebo is significantly worse than the other Ewoks. If you don't have Logray or Wicket, Scout is a very acceptable replacement.
This team, with good mods and a little luck, can beat any other team in arena, and holds very well on defence in TW. This is the team that I ran in arena right through most of the Traya meta, and it's the lineup I used to beat Revan a while back. The optimal lineup for most battles is Chirpa lead, Wicket, Logray, Paploo and Elder.