Get a Western Mountaineering MegaLite sleeping bag rated for 30 degrees (since you are waiting for May to leave).
Get a Big Agnes Copper Spur tent if you want two walls and a Tarptent Contrail if you just want one.
Get a Granite Gear Crown 60 backpack.
Get a NeoAir inflatable sleeping pad.
Don't bother with a stove or cook pots -- eat all food that you can eat cold.
This food should be low in moisture content (and weight) and high in fat and calories -- peanut butter is all of these things.
Chemically treat (with chlorine dioxide) water with either Aqua Mira liquid or Micropur tablets and skip the filters.
Don't wear boots, wear trailrunners that are light, all-synthetic, and dry fast.
Get Darn Tough brand socks -- your feet will thank you.
Get a pair of trekking poles (without the "anti-shock" feature) -- your knees will thank you.
Get a pair of nylon hiking pants with zip-off legs -- Columbia and Campmor make some cheap ones.
Get cheap off-brand (Target or WalMart will do) synthetic shirts -- one long sleeve, one short sleeve.
Get a Marmot Precip rain jacket.
Get a light insulated jacket for cold nights in camp, like this:
http://www.sierratradingpost.com/mar...colorFamily=01
Get a Sea to Summit water proof dry bag to go inside your pack to keep the things dry that absolutely must stay dry.
Bring some duct tape and bandages and ibuprofen (or naproxin or aspirin).
Buy a guidebook like the AT Companion.
If a lot of this stuff isn't cheap enough for you, go to the Sierra Trading Post web-site and start browsing.
I believe all of this advice is at least worth what you just paid for it
.