Have the club said anything yet about when Anderson, Koopu, and Ropati are due back? I haven't been keeping up with the news lately, but it would certainly be nice to have them all as options. Assuming that none of them are available along with Crockett and Gatis doubtful I'd go with the following team.
1. McKinnon
2. Ah Van
3. Martin
4. Byrne
5. Vatuvei
6. Hohaia/Witt
7. Rovelli
8. Rapira
9. Fein
10. Price
11. Mannering
12. Swann
13. Luck
14. Witt/Hohaia
15. Tuimavave
16. Luaki
17. Wiki
I wasn't terribly happy with the way the halves went against Manly and I just think that Witt and Rovelli are too similar to each other. For whatever reason Rovelli doesn't seem to be running much this season and to be honest I don't know if Witt really has much of a running game or not. I like Witt's kicking game, but I really think we need to have more of a running danger from the halves which is why I'd put Hohaia at 6. The only reason I've bracketed them is because if Gatis is injured I'm not certain whether Witt can play interchange hooker or not, in which case Hohaia might be needed on the bench.
I've put Byrne into center to replace Hohaia and I rate him as a better center than a winger. Having said that what I'd like to do more is put Mannering at 4, Luaki to start, and Sonny Fai to the bench. But I've never seen Fai play and only know him by reputation so can't really recommend him without seeing him play.
Otherwise I'd take Ah Van over Vuna simply because I've been more impressed with what I've seen of him, although he seems like he'd be a better fullback than wing that won't be happening any time soon unless McKinnon gets injured. I'd also go with Rapira (or possibly Tuimavave) to start again with Wiki on the bench. I like the idea of Ruben giving a bit of impact off the bench once the other have started to tire.