I don't think you can bridge Mittelstadt without bringing him to UFA status, unless you're talking a one year deal which IMO is pretty weak and lame and reflective of the Reinhart scenario.
Giving him a fair long-term deal is reasonable and fits in their cap structure just fine. You wait on the rest of the Cs and Ostlund to see where you're at. If somehow cap becomes an issue (which should be a bridge crossed when you get there) then a great option is to bridge Quinn and Peterka for two years, and give them long-term deals when Skinner's contract expires that same summer.
I'm gonna sound like a jerk, but this doesn't sound like a complicated problem to solve. The only hard part is eventually evaluating if Ostlund should displace any of them in a couple years.
Giving him a fair long-term deal is reasonable and fits in their cap structure just fine. You wait on the rest of the Cs and Ostlund to see where you're at. If somehow cap becomes an issue (which should be a bridge crossed when you get there) then a great option is to bridge Quinn and Peterka for two years, and give them long-term deals when Skinner's contract expires that same summer.
I'm gonna sound like a jerk, but this doesn't sound like a complicated problem to solve. The only hard part is eventually evaluating if Ostlund should displace any of them in a couple years.