First question is secret rolls...PF2 abounds with secret rolls.i can implement all or some...thoughts?

There are quite a few ways for me to play this...my view is anything that slows down PBP is bad for this method...instead I can put roll information in and DC next to a spoiler tag if you make that roll...

What's everyone's take? How many? What? Let's discuss this

During play, you roll some checks in secret instead of allowing the player to do so, as explained in the Secret Checks section of the Core Rulebook. This rule helps ensure that a player remains uncertain at times when their character is unsure of how a situation may resolve, immersing the player in their character’s perspective. It can be handy to keep a list of the PCs’ modifiers on hand to help you roll secret checks more quickly. At least, you should record each player’s Perception modifier, their saving throw modifiers (especially Will), and the skill modifiers of any skills they often use to Recall Knowledge. Check in anytime the PCs level up, and consider asking the players to update you when any of these modifiers change.

You can still have the players roll the checks even if an action has the secret trait. This is usually best done when the results are going to be immediate or when stakes are low, like when the PC is trying to recall something during downtime that they’ll see is false through the course of their research. You can instead have the players handle all their rolls, secret or otherwise. This works best when the group is interested in leaning into the dramatic irony of knowing a PC is wrong and playing up their characters’ mistakes

If anything I think secret checks by the GM speeds pbp up.

I certainly don't mind if you do rolls in secret, when you feel it's best.

Not a problem with me, especially if it speeds things up.

I like with the GM rolls secret rolls personally, cuts down on the "I know you rolled low so I am going to search now" mentality. So I am good with you doing rolls in secret as needed based one the activities we are peforming, and for the added responsibility of us specifically describing what we are doing to cue those rolls (i.e. "Azvaq sticks to the walls, running his fingers along them as the group travels, he knew the makers of this mansion would likely place a hidden path to travel between locations, if even for servants to move around in unseen")

I'm fine with the GM rolling things in secret, etc. I'm also fine with rolling things for my character too just to keep the story moving.

Yeah, especially if someone is gone for several days. Feel free to roll as needed if I'm tardy.