It sounds like you'll have to do a mix of kiddy and regular rides if you have a 4 year old. I'd say that you should definately ride Star Tours (duh
), Indiana Jones, Space Mountain, and Splash Mountain. The last three may be too scary for your daughter, unless she likes dark/tall roller coasters. I'd also do that Runaway Mine Train ride, it's a lot of fun, as is Pirates of the Caribbean.
There's also a train ride that tours around the park, and stops at each section. It's really neat, and there's a lot of cool stuff to see. There's also a Tom Sawyer ferry ride that's neat, as you get to see a lot of old 1800s wilderness stuff.
Also, on rides, USE FASTPASS! I cannot stress how great it is. You get a ticket and come back to the ride within the time listed on your ticket. When you arrive at said time, you get to cut like 75% of the line! It's great. Get Fastpasses for popular rides like Splash Mountain when you first get there, then go wait in line for another ride, then go back. That's what my family did, and it works out well.
That being said, hope you have a good time!
EDIT: Oh, and bring money too.