Just to throw out my 2 cent out there your better off with Renji then getting Lisa as I used her with 7 day Ichigo and Momo back when I ran 1-3-1 at lvl 50-70 and really wished I had picked up Renji instead
the main thing about Lisa is she only good if your opponent is weaker then you are or if Momo can stun your opponent Assult line reliably (it was 50/50 for me back then with Momo) Lisa also doesn't really hold up well in PVE either with is another point against her
really it up to you what you want to do with your formation