Ideally, Calgary would offersheet Peterka if he wants to leave. Let's say 5x8mil which would fall in the 1,2,3 value. Peterka doesn't make Calgary a surefire playoff team and the 1st in unprotected in the McKenna sweepstakes.
If we actually have a shot at the playoffs next year, you'd have the ability to offer the lower of 2 1sts for a rental
Meanwhile, if our pick this year drops below 5 OA; I'd look to make a trade with it either to acquire a player outright or trade down and get a player in compensation.