Wow, only 2 days! Good that you're planning well in advance so you dont miss out on anything. I was there for 5 days back in August and still wished I had more time!
Spend nearly all of your time in Disneyland, do as much as you possibly can, and maybe about 4 to 6 hours at California Adventure and only do the main attractions at that park (Tw. Zone, Ca Screamin, Soarin', Monsters, Muppets, Animation Bldg, Aladdin, plus something else that interests you i fyou have time).
I'd recommend Fantasmic and the 50th Fireworks show as absolute dont miss things to add to your list. If you can swing the extra money and are lucky to get a reservation, the Fantasmic Balcony package is awesome. For $56.00 per person you get access to a private viewing terrace that seats either 16 or 20 people, a really good dessert buffet for 30 min prior to the show, soft drinks, and servers. You have a perfect center stage position about 30 feet above the crowds, maybe 50 feet or so back from the water's edge. The view doesn't get any better! There is a number to call specifically for the reservation and you have to do it 30 days in advance. Let me know if you need details. The fireworks show is incredible (almost worth the price of admission by itself) and most people think the best view is from the hub, between the castle and the Walt & Mickey statue, but for that area, you'll need to get there to claim a spot up to 90 min to 2 hours before showtime. It was worth the wait for me. Other than that, dont miss the main attractions (space mtn, Indiana Jones, Small World, Jungle Cruise, etc) and the afternoon parade.
Too many suggestions to list here! Just ask if you want more info