Congrats! I see you made it and had a great time, from a more recent post. I don't see any big gear items you listed that you need to ditch. Going without gear is mostly wishful thinking and depending on others. Ultralight gear is all about the latest materials and technology (read "expensive"). It's an entire system of gear, not a collection of light things that happen to fit in a pack. So that's how people do it - they have gear made from cuben fiber, carbon fiber, silicon-impregnated nylon, titanium, etc and they try to use things for more than one purpose.
If you're serious about ultralight backpacking, you should break down the weight of every item you have, research the latest gear and develop a plan from the start. You'll have to spend a lot of money upgrading, and learn some new skills because the gear is a little different and not as durable as regular REI stuff. Its a lot cheaper (and easier on a marriage) if you're just getting into backpacking because you don't have to upgrade everything.
Make sure you're weighing accurately and compare "base weight" without consumable items like water, food, and fuel. That's your gear weight. Consumables vary depending on the trip, and everybody has to eat. Water is usually the heaviest item as nothing else typically weigh more than 2 pounds including a 2-person shelter that sets up with hiking poles.
Congrats again, and good luck lightening your load for future trips.
