Short version: With photography in mind, where to set up camp near Picket Guard Lake or "Island Lake" and where in Miter Basin?
Longer version:
I am hitting the trail at the end of this month to check out Miter Basin and Picket Basin over 8 nights. Main goal is exploration and photography, no peak bagging or fishing. There is a comet low in the west, I'm hoping for a couple photos so I'd like to find a couple campsites on the east side of a lake with a good mountain in the background, shouldn't be too hard

My planned route is Cottonwood Pass -> PCT -> HST/Junction Meadow -> Picket Guard Lake -> back to PCT -> Crabtree Lakes -> Crabtree Pass -> Miter Basin -> New Army Pass -> Cirque Lake -> Trailhead
I plan on 2 nights in the Picket Creek Basin and Kaweah Basin area. I'd really like to set up camp and dayhike for the couple of days vs. move camp. It appears that the two obvious choices for campsites are Picket Guard Lake or "Island Lake" in Kaweah Basin. Is there any reason to set up camp at one or the other? I don't want to cross Picket Pass with a full pack and then realize that I should have setup at Picket Guard Lake

In Miter Basin, I have seen mixed reports about campsites or not near Iridescent Lake, is it worth camping or just dayhike? I know I can find a campsite near Sky Blue Lake so that is what I am planning now.
My last night I am aiming for Cirque Lake, this seems to be a little more quiet than the Cottonwood Lakes and sets me up for a short last day to the car.
I enter on July 28 and exit on August 5, I'll be solo if anyone wants to chat.
sorry for the long winded post and thanks to anyone who can help