Tony - Glad your intro shoot was successful and satisfying.
I still use the taper end of chopstich for hold-open. But at a pinch even a sharpened pencil will do!!!
I do not know that grease but IMO even allowing for the recommended stuff, any good grease should be adequate - more important I think just to ensure that take-down and clean/lube is often enough.
Pin right to left yes... if you look at slide holes - it's only way

You say thoro clean - well normal take down is all that should be needed - I'd leave grip panels etc alone - I have had mine off once, partly to take pics but all you need for cleaning is exposed with normal field strip.
I still do not use channel locks for spring replacement, reassembly. Maybe despite age I have enough hand strength, and really hate getting anything steel in the way - tho of course Bros R do recommend that method. I'd try and see what works for you.