I've seen two turkeys in my 30 years of living here in the Mason unit, not something I would count on.
The bears are going to be awake but pretty sluggish until the weather gets a little better. Grass is green so they've got feed but you've probably got another month until they are peeling trees. I'd shoot for the end of May for taking time off, but I'd hunt every weekend you can until then, keeping an eye out for poop and I'd do lots of calling if I were you, thats going to be a tough hunt and your best odds might be calling, as there's not a lot of vantage points in most of the mason unit.