Well, if we stick to the up the middle, kick for the corners plan, I'd go
1.Farnworth
2.Coates
3. Kennar/Copley
4. Mead
5.Oates
6.Croft
7. Turpin
8.Lodge
9. Flegler
10.Hass
11. Riki
12. Pangai Jr
13. Carrigan
14. Levi
15. Bullemor
16. Kennedy
17. Asiata
18. Deardon.
Try to wear them out early, then bring on Levi and Asiata and leave him on. Turpin is dummy half in attack, halfback in defence until then. Make sure Fifita's tackle count is high. Get Kennar/Copley, Farnworth and Mead practicing kicking incase it is needed inside the first 20 mins.