I'm a Flyers fan, but I think you're underestimating the Penguins depth and Fleury's ability to be a shut down goalie. And I wouldn't say he's struggled a lot recently. You are also putting a little too much weight on Bryz having one good month, he's a question mark for me.
I think it'll be a close series, and I think its a terrible match up for Pens, who have had consistent success against everyone in the east this year except the Flyers. Still, their goaltending and the fact that they are as healthy as they've been all year at the right time will probably pull them through this series.
Fleury has been good in the past, but his stats against this Flyers team are really sub-par. 1-3 with a .872% save percentage and a near 3.5 GAA. The Pens will also feel a lot of heat from guys like Hartnell who'll definitely get in their heads and I think will force them into a lot of stupid mistakes. Another thing both teams have unparalleled strength in is the ability to create breakaways/odd man rushes off a very long homerun pass, so it'll definitely be an exciting one. Go Flyers!