I’m considering adding a 5th kato sticker to complete the craft but before I commit, I'd like to hear your thoughts. I don’t want to spend a crazy amount on this, so I’m planning to go with one of the cheaper stickers.

Where should I place the last sticker?

Which one would be the best fit?

How would you value this even with just 4 stickers? I have a hard time comparing it to others.