Super Duper Ultralight.
Your list is looking good. My suggestion may be a little flawed but I’ll give it a try.
I’m sure you could find a campsite with trees to sting your tarp between so it is possible to drop two pegs there.
Could you lose any weight if you switched to GVP Hi vis Spectra?
Also I’ve been in contact with Ron Bell from MLD and he says that hes just finished testing some new SUL bags that will come in at 3.2oz when cut down. However, since you have made it down to this minascule volume do you need a bag that big? I would see if you could find a large stuff sack and sew some straps onto it. Could drop and oz or two there. Or you could ask Ron or maybe even Bill if they were kind enough to give you some plans or make one for you.
You could possibly lose the sleeping pad. Instead gather litter to put under your ground sheet.
I dont know if its possible to make a lighter bivy from large garbage bags, but maybe you could give it a try.
Ultimately I think your approaching a bottom limit to how far things can go. The next step I think would obviously be ditch the sleeping bag in place of a lighter more suitable clothing. I don’t know what your low temps are so maybe this isn’t possible. But good warm clothes and an 8oz sleeping bag liner could get you way down. The choice has to be made now if you want to remain in the status of hiker or minimalist. If you chose the latter you may drop the cook kit. 2 day weekends are not going to cause you body harm if you bring too little food. I’m sure you could live on Gorp and granola bars and fruit for a few days. You don’t need to cook for survival only for pleasure. (though I could be biased since I eat mostly raw food in place of cooking)
Other than those mostly rediculous attempts at reducing weight, I think your doing pretty damn good. I don’t really have access to many of the products in your list so I havent tried them and instead had to formulate my minimalist approach. I still have yet to go completely without gear but I will give this a go as soon as the weather here warms up.
I look foward to reading your feedback