So for the Finals we are likely to have:
Quarter Finals:
England v PNG at Wigan (25K)
Tonga v Samoa at Warrington (15K)
Australia v Ire/lebanese at Huddersfield (24K)
New Zealand v Fiji at Hull (25K)
England will sell out, unfortunately the next best QF to market is at the smallest venue but should go close.
Huddersfield I can see go OK if Ireland qualify and show promise against NZ in the group stages (less promising if it's Lebanon) and I'm not sure what has happened to Hull & Internationals.
Maybe 24K, 13K, 18K & 12K?
For the Semi Finals, England v Tonga will sell out Emirates (60K), whilst Australia v NZ should get over 25K at Elland Rd.
Final will be 60K+ regardless of who's in it and potentially will sell out before the opponents are decided.
So that's 200K+ for the Finals with some significant upside there if the other QFs & non-England Semi sell well.
With already 95K through the gate, 400K+ just from the Men's tournament is looking achievable and 500K+ a possibility.