Hey! I'm new to this forum, but I'm a Yosemite veteran, haha.
First off, sounds like an awesome itinerary you've got there. I assume you threw Illiouette in the mix because all the permits from everywhere else to LYV were taken...but hey, that's the way to do it. Don't expect any killer views of the fall despite how close you'll be to it (it's really buried in the gorge) but don't worry, you'll see plenty of waterfalls on the Mist trail. And be prepared to climb about 1000 feet out of Illiouette Gorge on the Panorama trail - you probably know that, but it caught me by surprise the first time I hiked the trail. =P
I REALLY wouldn't recommend doing both Half dome and Clouds Rest in the same day. Unless you're some superhiker who knocks out 20 miles every other weekend, be careful. Distances in Yosemite are really deceiving, especially on trails like Half Dome, Clouds Rest, and the Mist Trail - they're steep with lots of steps. 8 miles can easily be a full day. I know I probably sound like an annoying parent (and, in fact, I'm only 18 years old) but just keep that in mind. If I were you, I'd pick one that sounds more enticing to you (Half Dome's the Yosemite classic, but Clouds Rest has rivaling views without the crowds) - you'll have more time to enjoy it that way.
If you're a photographer, the Mist Trail is better in the afternoon, when the sun will be behind you. So keep that in mind. Otherwise, it's a joy any time of day. If you're looking to tack on a few miles, you can always take a hike up Little Yosemite Valley and just turn around when you feel like it. By the way, I wouldn't bother driving up to Glacier Point for the sunrise - late afternoon/sunset is much better. I'm absolutely obsessed with nature/landscape photography, so trust me on that one.
I really want to suggest hiking up to GP on the Four-Mile trail instead of taking the bus, but it's supposed to be ridiculously hot on Sunday and that trail is a puffer, so I might save it for another time unless you don't mind sweating. (The weather was perfect just a week ago...why, oh why?)
as others have said, don't forget your bear canister, especially for LYV. It's a crowded campground and they've had intense bear problems in the past because a lot of people there are...well, kinda clueless about their food. As long as you follow the rules, you should have nothing to worry about.
I'll actually be driving up from LA on Saturday and doing Half Dome on Wednesday (going from the Valley floor in one day) so looks like I'll miss you on Half Dome by just one day! (There's a chance we'll cross paths while I'm on my way up, though!) Have an awesome trip. =)