Which SMT Led I have to use in this proyect?

Hi, how are you ?

I am working in a proyect where I have to make a Row and Cross like there is in the next photo:

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I wanted to do it with SMD components. And the question is, which Led I have to use? I know that there are differentes packages and differents light intensity between them and I need to know which is the best for this work.

Thank You So Much

What part are you making? The Up arrows?

I am designing Up arrows and a cross. It is for a system. And It should to bright enough.