Heya Sam,
Welcome to BPL.
I’ve tried to offer frugal advice.
Pot holder: Do something to avoid carrying that pot holder. Maybe drill a couple small holes near the top of the pot and use some bailing to lift, while using a sock from the bottom to tip to pour. Or wrap some fiberglass wick around it so you can pick it up that way. Just do something lighter so you’re not carry so much single-use weight. Should save you almost the full 43.43g.
Cooking pot: Your aluminum pot could be traded for a “Type II” Foster’s can. The gist is to open it from the bottom so the flat top can be used with your stove. A savings of 2.5oz. You may lose some fuel efficiency if this switch is to a narrower pot but the weight savings might make sense on shorter trips or sections with less time between resupply.
Stakes: There are lighter options for tent stakes like Lawson’s stakes. Switching to his will save you 25g. There may be lighter that are functional (don’t be fooled by the terra nova 1g or 2g stakes that look nice on a gear list).
Wind shirt: I don’t think I saw a wind shirt on your list unless the R2 does that job well. It looks like you have the R2 listed as worn weight. If you’re really going to wear it all the time, bring a down vest or something for evening/morning. Also, wear a base layer without a zipper as the zipper won’t do much good in regulation with the R2 always over it.
Line: Replace that 3mm rope with some sort of spectra line such as from Z-Packs or Lawson. 2.4oz. savings right there with the lighter line from ZPacks. Were you using the 3mm rope listed for guy lines? I ask because you don’t have guy lines listed anywhere.
Light: The headlamp gets heavy when considering the AA batteries. The Photon lights are fairly cheap and very light. Downside is they’re not terribly bright, but at that weight and price you can attach two of them to your fleece hat with velcro or other means.
Thread: Replace the nylon thread with floss and you have a dual+ use item. You’re probably not going to need to sew and flossing is good for your health. I think waxed floss has the advantage of being water proof. Make sure the floss can fit through the eye of your needle.
Water portage: SmartWater or similar bottles are much lighter and have a better shape for packing than the PowerAde bottles you have listed.
Ground sheet: The Tyvek groundsheet is listed as 4.63g when that is probably ounces. Ditch the Tyvek and pick up a window shrink kit and use the plastic from that. Should save you 2.5oz or so.
To add: With the weight you saved you should consider using a bivy for use with the poncho tarp. You really don’t want that down bag getting wet in a rainstorm especially considering you are cutting it close on the amount of insulation you’re bringing. There are inexpensive options here from making your own simple Tyvek emergency envelope type bivy to sewing one out of silnylon on the bottom and some DWR nylon on top.
Another thing you may want to add is some sort of visor to keep the bug net off your face. If you’re only using it while you sleep, you can rig a line coming down from your tarp to the net.