Help with awakenings for Shinku and Hathor

I would like to ask for some advice on which awakenings I should use for my new team. All are 80 lvl.

My current team is: -Shinku A3T5 -Nanally A3T1 -Hathor A1T5 -Zero A5T1

Previously I was using Nanally as my main DPS together with Zero, Jiuyan, and Sakiri.

For Nanally I was using A6, A5, and A3. But now that Nanally is no longer my main DPS, I think I should replace one of those with A4. I am just not sure which one, i think i should replace A6. I will definitely replace Nanally with Iroi later on.

As for Hathor, I have no idea which awakening I should use. A1 maybe? First time I will use her so I have no idea how I should build her yet.

I also still have an S selector. Is there any Hathor additional awakening that is worth unlocking with it?

For Shinku I am obviously using A3 and A4, but I am not sure which third awakening would be the best.

I would really appreciate any advice <3