I don't have much doubt about Clark, Lichaj, Bannan, Baker and Herd at this point - I think what we've seen of them shows that they are good enough to be in the squad. That leaves the uncertains - Gardner, Weimann, Carruthers; the latter 2 showing signs of being able to cope with Gardner (IMO) not really showing anything yet.
Even if we don't sign anyone else and the uncertains can't cut it, I don't think we'll do worse than about 15th - and considering that there has been wholesale change going on, in pretty much every area - that'd do.
I understand it's just your opinion but how you can say that Bannan is good enough to be in the squad but you're unsure and Weimann is beyond me. I'd say Bannan has got everything to prove!