At the end of this, the way I see it, if 6 or 7 year's could have gotten it done, PF would have signed with the Nats long ago. I don't believe that was ever a possibility. I think that Boras' minimum number was 8+ years/$200+ million and he was simply going to wait until a team met his price. If it wasn't Detroit, I'm quite certain Boras was willing to wait until the Dodger sale was final and sell Prince to them.
I firmly believe that if Boras was willing to do 7 years, the Nats would have pulled the trigger.
In hindsight, I don't think a 7 year deal was ever a possibility. So in that regard, the Nats were never in it.