I'd leave out the 500g
Altus and exchange it for two large-size black plastic rubbish bags 20 gs?, one for you to wear (no need for sleeves, it's summer) and one for your pack. Perfect airflow, just slit a few holes.
Discard the bubble wrap. sit on the rubbish bag.
Leave out the mug & plate & knife-fork-spoon. Eat everything fresh/raw or out of it's carton. Fingers are fantastic!
Eliminate the Smartphone, charger and headphones. Go medieval. Try practicing Detachment for a few days or weeks and months. Astounding things happen.
-Lovingkindness
ps, you have 2 T shirts and one long sleeved shirt on the list. It's summer. Wear the longsleeve wicking shirt as you hike (sun protection) and sleep in the T shirt. No need for a spare.
pps ...and get rid of the universal plug. Just wrap a rock in plastic then stuff it in the sinkhole, that's if there's a sink. There certainly aren't any baths to luxuriate in....not unless you splash about in a village lavadero....
ppps...lose the compass. Navigate by the sun and stars....
pppps.. .discard the towel. Use the silk liner or the clean T-Shirt. It's over 40 degrees out there. Everything dries in seconds....
ppppps...I might discard the wind breaker and fleecie, too (400gs?) in exchange for a longsleeve thermal base layer (100g preferably merino) &, you guessed it, the versatile, elegant black plastic rubbish sack which you already have...but if I now have a base layer then I'd discard the T shirt.
pppppps...do I really need two pair of knickers and a pair of ear plugs? If I swim in the Rio, sunbath for 5 minutes, then sleep out under the stars in sweet solitude sweet bliss, whose snores will there be to disturb me?