How about this?
Offersheet Hamilton, Feaster-like 2 years 5m Average salary (year 1 3.5m, year 2 6.5m) So the compensation would 1st and 3rd in 2016
Then trade Wideman to recoup assets? Rationale, Wideman's value has never been so high as a Flame.
I am absolutely on board for a nice big offer sheet like that; I'd even be okay with a 6.25-6.5 million dollar offer sheet; there's little difference between giving up your 1st, 2nd and 3rd... and your 1st & 3rd; if that's the stray that breaks the camels back, then you have to do it.
Backload the offer on a short term to set the value that you'd have to resign him for. Let's say 6.2 million: 6, 6.2, 6.4. They have all of 10 million cap to spare; have all of 10 forwards, 3 Dmen and 1 goalie signed. At 5-6.5 million; that gives very, very little wiggle room for this team.
3.5 million to spend on 6 roster players is really tough. Even at league minimums this is cutting is tight... You could bury Kelly in the minors or something for some more space... but that would be a team close to the cap with a really, really weak bottom half of the lineup.
EDIT*
As for the second part; if the season doesn't go so well, we can always trade some assets to get back into the first round. Wideman, Hudler and a couple others could get some nice big returns from teams at next years deadline, it's why I wouldn't cry about not having a few picks next season.