i would recommend running 1-2-2 formation so for assulters renji and main for support i recommend Rukia and Orihime or Hinamori. But if you really want to run 1-3-1 go for ichigo and lisa.
1-2-2 for ur lvl sado orihime momo renji or ichigo ........... 1-3-1 sado lisa ichigo rukia << t1 her though those were my setups and i was very strong before the merge xD