Surely the Reds best XV is something resembling
Slipper. BPA. Thor
Rodda Tui
Higgers Timu Smith
Tuttle
Lance
Paia’ua
Kerevi
2 of CFS, Perese, Daugunu
Toua
Mafi/Ready
JP Smith or Fa’agase
Ruan Smith or Fa’agase
Douglas
Korzyck
Lucas
Stewart
The winger that missed out on starting
I'd probably have Smith or Higgers at 8 (at least on attacking scrums), but otherwise for the forwards pretty spot on. Although like I've said before I'd be tempted to get Smith as much rest as you can given he's fucking 40! Should be get lucky and make the finals you'd want him fairly fresh. So maybe you'd rotate the other guys in and out of that third back row spot. You could also depending on the game situation look at trying to pull Higgers early from games where you can -- there isn't a whole lot between any of the guys who have played for us already and the starting XV. ASY (Angus Scott-Young), Wright, Korczyk, Hockings have all accounted for themselves very well thus far.
As for the backs, I'm not sold, I still think Toua is best on the wing (but he does have the skills to play 15). And if we are playing Lance at 10 we can't play Paia'aua at 12. Perhaps Stewart - Paia'aua will work moving Lance to 15, assuming Toua is on the wing but we haven't yet seen that so we can't really know. But there are too many moving parts to the backline. I hope we experiment with it and it doesn't take a Waratahs/Folau-esqu situation for us to look at those kinds of things.
But the backline isn't quite humming along yet but I'm sure if they keep tinkering with it they'll find something that fits.