Tyron is the priority, much less likely something happens that could drive down his value (injury, off the field) so it can only go up, we're already looking at 6 years 50m+, likely 10m a season. Worst comes to worst we franchise Dez while trying to work something out, if he misses 6 games next season we may be able to luck into locking him up for 6 years on a high-guarantee, (relatively) low-salary contract. Likely we're talking at least 6 years, 75m, 50m guaranteed (that's the ballpark we're in with him). We don't want to pay Larry Fitzgerald money (8yr, 120m, 50m guaranteed... signed in 2010).
Keep in mind Sean Lee signed a 6 year, 51m contract in August and Tyron and Dez will both likely get much more than that. Heck, if they both go 8 years you can conceivably see them both get 100m+ on the open market.