Couple of #'s for you:
Last year 32,000 season ticket holders. Say 90% re-up (not unrealistic and probably a lower # then reality with the new stadium): 28,800 tickets sold to current holders.
Next step is current holders who wish to buy additional seats, lets lo ball that and say just 20% decide to buy an additional seat and 10% decide to buy 2 each: 11,520 additional tickets sold.
Third step: Flex pass buyers or people who placed the $100 deposit but did not have season tickets last year, I would low ball that # at around 4000 people, say half buy 2 tickets, half buy single seats: 6000 more tickets sold.
Total season tickets sold: 46,320.
And to me thats a low ball #. On the high end I would move season ticket renewal to 95%, current holders buying additional seats to 30% & 15% and new tickets holders to 6000 deposits, which would make total season tickets sold high end: 57,600.
So say meet more twords the low end and say 50,000 likely season tickets sold by the time they go to single game tickets.
I could see the team ending up with 4-5 sell outs this coming year.