I did maybe 600 images and used only 10% of them for this comics. Some of them required minor fixes, but I just use spot healing brush in Photoshop. I see many galleries with thousands of similar pictures and don't understand who watches them, they all look the same.
Although now I am curious which format people will like more - comic strips or single pictures, because I think many people look it from phone and single picture is better, though comics have more story on single page.
It's a really good story. You're asking whether it's about individual images or a full story. Definitely a coherent story. I also don't understand why people upload so many similar images — what you're doing is exactly the right thing, in my opinion. Hoping for a sequel soon!