Just a few thoughts -
You have a good start...skip the deodorant. It won't work very long and frankly, you will smell like grime no matter what you do. It's the way it is - I guarantee after 500 miles you won't notice the odor of other hikers, with the exception of the clean, shampoo-fresh smell of day hikers you meet along the trail.
Second, SoCal is tricky, but I would recommend based on my experience some insulated jacket. I think the Montbell line of jackets, they make some very light stuff in down or in synthetic (thermawrap). The tend to run small, so if you do decide on this route, go a size bigger. If you don't need it in SoCal (some years it can be chilly in the mountains, other years, warm), you will likely benefit from insulation in camp in the Sierras, Oregon and Washington. Just my two cents.
You will also likely want gloves for the Sierra or anywhere it gets cold. Nice to have to keep your hands warm. You don't need some huge pair, a small pair helps. Some people like sun gloves, at the very least, carry sunscreen through SoCal and the Sierras.
Agree on the bottles - the Nalgene collapsable bottles are good, but other than that, use Gatorade or cheap water bottles. THey are WAY lighter. Depending on the water situation in SoCal, you might have to carry up to 5 + Liters in a few stretches.
A wide-brimmed hat in SoCal to keep the sun off of you is nice. a warm fleece skull cap type of thing is nice in camp. You will want good (not necessarily expensive) sunglasses that fit well in the Sierra.
Do you have a lightweight sack to hold the food until you need your bear canister? A bear canister can be a tight fit in an Ohm - I know people do it. What is your resupply strategy in the Sierra?
Are you carrying any maps/guides?
Are you carrying trekking poles? Some people love them, others don't use them. It's a personal thing.
Medkit - I agree, the issue you are going to have is if you need serious medical treatment, odds are you aren't going to be carrying anything in your med kit for that. I carried some band-aids, plenty of Ibuprofen, a prescription-strength pain killing medication in the event I busted an ankle or something and had to walk out on my own, chapstick, tape for my feet (I taped my hot spots every morning prior to hitting the trail to prevent blisters), and I think tweezers (which came in handy when I accidentally brushed my hand against a cactus).
Have fun out there!