Can I use the header pins for LR24 communication to save some standard pins?

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MaxMaker:

Picture

I am building a remote for my electric hydrofoil surfboard. *

I have a lot of stuff that I need to attach to a NANO. Can I use some of the header pins for the LR24 communication? Whats up with those anyway? You can see what I mean if you look at my annotations in the picture above.

header pins?
Those pins have a purpose.
One of which you circled is 3.3 V !

What in the heck are you thinking?