Loosies poser for Heyneke

How may loosies can you have in a 30man squad? most likely 5 as you need 3 hookers and some like 3 scrum-halves.

1) Alberts(unless he plays lock)
2) Vermeulen
3) Louw

those 3 were first choice last year so then only two more from:

Brussow
Kolisi(is he injured?)
Burger
Coetzee

We know HM Feelings on Brussow( which are obviously unsound) so we can then assume from the above that it will be Coetzee and Burger.
If Alberts plays 4 then you need another recking ball like Deysel or Potgieter from the tahs.