Also, here's a grab bag of tips:
Try and reduce your volume.
Get a smaller pack.
Try a lighter tent or use just the tent or just the fly.
Substitute the tent for a tarp or hammock.
KISS (keep it simple, stupid!)
In my opinion, inflatable pads like the neoair are comfortable, light, compact and a pain in the butt. Setup and take down is hard on the knees and time consuming. It WILL get punctured - only a matter of time. So, if you do go with one, always bring a patch kit.
Go for a sleeping quilt, rather than a bag.
Read books, forums, blogs, watch youtube, listen to podcasts... LEARN!
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"Without craftsmanship, inspiration is a mere reed shaken in the wind." - Johannes Brahms