First of all, you will not be disappointed in being a season ticket holder. Can't think of a better way to spend $80! The athletic department does a fine job of rewarding the season ticket holders, as much as they can (better priority for special events such as Nationals, Big Tens, National Duals events that we host, Olympic Trials, and you guessed it, OSU meet in Kinnick).
My understanding is that the tickets for this meet will go on sale to the general public October 1st. The plan is that season ticket holders will be given an opportunity to purchase an unlimited number of tickets (at an earlier date). As of today, the ticket office was not yet sure when that date would be. If I haven't heard anything from the ticket office by the last week of September, I will contact them again to get the scoop. Based on what I have read/heard, the tickets that you purchase will be based on your season ticket priority, and thus, everyone in your group will be able to sit together.