After I wrote my post I got called away from the computer for the evening. I apologize for not being more engaged.
Thank you all for the replies. I should have known that it would escalate and be more daunting than I imagined. Blackout/no mask seems a million dives away, but I get it. I think that I could end a dive without my mask but haven't practiced that. It might need to be tested this weekend. I am not at all confident that I could maintain much trim/buoyancy with a blacked out mask. Skills left handed seems easy, but then I haven't had to do it, have I? I'll give that a go. Two pounds light on weight seems horrid. I'll give that a go as well. The playing cards with multiple failures may have to wait until next fall if I have to address them in decent trim. But again, I can see the value in learning stress management and failure prioritization. I do actually practice a bit of DSMB work. I am trying to stop taking a big breath before inflation. I tend to inhale and rise. which I assume is a bit stereotypical. working on normal breaths during deployment.
I have probably missed a post in my reply, that is not intentional. I'll be re-reading and incorporating some of these tests in small chunks, slowly building up difficulty. Thank you all for some great replies and ideas.