Your camp pictures are great! I used a bivy once and never will again. I would not focus too much on weight, I could easily drop 25 pounds (from my 90ish) just by going to a lighter tent and pack, but won't. Also, when going solo, you have to carry gear that otherwise could be split amongst the entire crew, eg tarps, tent/fly first aid etc which would lower weight even more. I bring one set of clothes with extra socks and long underwear. Using the MREs with heater sleeves avoids noise, is convenient and quick. Building fires is nostalgic, but a waste of time. I strap an empty 1 gallon plastic milk jug to my pack going in and once camp is set keep it filled with purified water. I used to add gatorade or crystal light to the gallon water jug, but discovered the hard way that when you add either of those, the MRE heaters don't work! Add the gatorade only to the bottle you carry! Bring a pair of mocassins or other shoes for around camp. I also bring the moist "handi wipes" for bathing.