Other than Egan I can't see anyone else in that pack playing big minutes - AFB, JTB definitely won't, Curran never played more than 32 so far, looks like BMM will be used for impact, Sironen got a few 80 min games last year, but I reckon some of those were covering centre/half, and more often than not he got subbed. Even Katoa only played the full 80 four times last year.
As a very rough estimate I'd guess:
AFB: 50 mins (Evans 30)
Egan: 80 (not confident he's actually up to 80, but will take their word that's the plan)
JTB: 40 mins (ah Mau 40)
Curran: 25 (BMM 55)
Siro/Katoa: ~70 (Harris shifts to edge for a bit)
The risk is even a slight break puts him overpriced. In 60-70 min games last year (which he had 4 of) his avg is 55, in 70+ minute games post rule change that jumps to 64.