I personally don't use rain pants much, but I tend to "run hot" (metabolism). But I'd prefer a rain skirt over rain pants, with the caveat that they're not so good when the wind is up.
But if you do ditch the rain pants, make sure you think through your "town clothes" strategy (a wind skirt might work for some, others wouldn't be so happy with that option).
I don't know what a "thermal jacket" is, but 11+ oz seems like a lot; I hope this is plenty warm. My Montbell EX Light down jacket weighs about 6 oz.
A leather hat?!? Why?
I presume you'll have a change of socks.
I wonder if you'll be happy finding sticks to build a little fire every night? Hiking styles really vary, maybe this will work fine for you.
I think you'll get more helpful feedback if at some point you can list what you assert is a really complete gear list (and with weights for everything, including clothing worn). So for example, I suspect that a single 32 oz gatorade bottle isn't your only water storage?
Yes, definitely make up a scant few boxes or use a bounce box and don't carry the entire guidebook at once. You'll want replacement shoes along the way, at least, there are a couple of places where it's nice to get a food drop, and you might want to swap some clothing/gear along the way based on expected average temperatures. Five resupply boxes worked really well on the AT for me (NOBO, but not sure that matters).
What's your strategy for dealing with bugs at night?
I'm not a fan of the hiking staff approach; I like them if I'm doing river walking (I mean walking for extensive periods right in the river) but otherwise I don't see the point --- a staff IMO doesn't at all do the same thing for you that a pair of trekking poles does. It's not 'useless', just I wonder exactly what the intended use is relative to the weight/hassle.