Great review. A few points that might help.
The camera should be just as good as the one on the S3 or Note 2 (so very good). I've read that the 8mp camera might work better than the 13mp on the regular S4. Some people say the one on the S4 lags because the images are so large.
Quickpic is the gallery app you want. Seriously...download it and be happy. Plus it's free.
Try Boat Browser. It's got a ton of options and one yet to find another browser (stock or aftermarket) that I like more.
Jellybean Keyboard Pro is my favorite keyboard by far. I like the Google Keyboard as well, but JKP's word suggestion and autocorrect are better, IMO.
I couldn't agree more on the 5" iPhone screen or notification light.