pile you shit in a big heap and ask these questions to yourself.
1. do i NEED this. (ex, if there will be water avail, should I bring a stove. why not just eat non cook food..do I need my pack lid, two biners on each sling, do i really need two ropes or should I just commit!)
2. can this be lighter (ex, my sleeping bag/tent system got reduced last year w/a Moonstone Lucid bag, a betalite tarp, a bibler winter bivy, and a fucking thing yellow "hard-man" foam pad)
3. what can I double up a use with (gear for a spoon, nalgene for a mug, blah blah blah)
4. do I really need to go so light? I asked myself this question this year, now I bring a ton of shit into basecamp (if camping) and get a good meal and good nights sleep.
5. will ligher = faster? (i.e. how fast will I be approaching or downclimbing with my flip-flops..for me, pretty fast, for others, not so fast. will I climb fast after I just froze my ass of at the belay or last nights bivy? How fast will I climb if my rack is skimpy and I gotta decide to pro it up/put in more belays vs. a heavy rack and constant movement, and how much faster will I climb when I have 3 cams clipped to one biner on the rack, how much faster will belay change-overs be if we just have one pack vs. the leader has a pack too and can eat and drink while belaying up the 2nd. does my reverso save time as well as weight. why not carry a belay plate like a gi-gi and an atc. bring the 2nd up and put him on lead belay with the atc, this way the 2nd won't have to bother with clipping in while you switch up your reverso.)
just some thoughs