My question would be; Why are you using Print By Object?
Having reviewed your model, there is absolutely no benefit that jumps out.
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I hope you are not hoping to remove one before the other prints, you users surely will not.
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You are using PLA, so there is no concerns over too many retractions like TPU would benefit from being done one at a time.
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You are not using two different filament types or colours, so print by object is not helping you reduce swapping.
If this was mine, I would make one profile and turn off the Print By Object.
If you have a specific need I have not spotted requiring print by object, let me know and I will see what I can divine to reduce your profile total count.
I know I get get rid of one that you listed, I am hoping two, but I need to test things.