The other wild card is Sua'ali'i, depending on how the tahs use him once he gets back on the field, but Schmidt probably still sees him as a centre first at this stage.
Sua'ali'i definitely makes things tricky. Providing he returns from injury soon-ish and plays well, he's almost certainly in the matchday 23 and probably in the starting XV.
In my view, the guaranteed selections from 11-15 and 22-23 are Ikitau, Jorgensen, Wright and Sua'ali'i. We almost certainly need a replacement 10 on the bench as no one else is a reasonable option to slot in there so you probably limit it to just the 23 jersey on the bench.
So there's 6 jerseys to fill and four players pretty much locked-in in my view.
I'd be tempted to stick with Ikitau and Sua'ali'i at 12/13 as there doesn't look to be as many good centre options and then you pick Daugunu in the 23 jersey as cover for 13 and wing.