Pack: Osprey Atmos/Aura 50L
Tent: Big Agnes Fly Creek UL2 (front entry) -- OR if you don't like the front entry, check out Tarptents. a little more expensive, but a little lighter with intelligent architecture
Sleeping Bag: Sierra Designs Mobile Mummy - down bag with cozy hood and arm holes, comes in multiple temperature ratings.
Sleeping Pad: Thermarest Z-Lite (~$40) -- if you need more cushion, opt for the Thermarest NeoAir XLite instead (~$120)
Water Filter: Sawyer Squeeze (regular size)