Hope I don’t sabotage the OP’s post, but I too plan to hike next year...and am looking for ways to reduce weight.
I always hear that ones tent can be replaced with the popular ultra-light tents and save weight. My tent setup (Marmot 2P UL) plus footprint and 4 tent pegs comes in at 3.5lbs. I’ve looked at other tents like TarpTent...and just can’t justify spending $500 to save maybe 1 lb. I’ve wanted to go the hammock route...but again, when you factor in top quilt, underquilt, pad, all the rope plus the hammock...it surely is over 3 lbs.
I think where I’m going to cut weight is clothing...but I’m planning a March 1 start date...and would rather have too much at the start than not enough. I can always send clothes home as I progress.