I don't think we could afford all unfortunately but yes we definitely need Leniu also in place of Thompson. With Moses on 1.2M at least and Crichton on 750K I very much doubt we'd have enough to sign Nanai also. If we got Williams though as a 7 who I really believe is a better 7 than Moses that would save about 500K on the cap. Will Kennedy is a like for like fullback with Crichton I believe and around $250-300k cheaper. If that allowed us to sign Nanai also it's worth pursuing.
Imagine a left edge with Burton, JAC, Xerri, Kikau and a right edge with Williams kicking for Nanai and Kiraz. That would be perfect.
Having 3 extra weapons in attack is always better than having 2.