Calling moms of three...

I need some feedback. I'm trying to decide if I want another baby or if I am really done. My husband wants at least 1 more if not 2 more. I originally wanted 4 but my feelings changed while pregnant with my 2nd. I felt done. I need someone who is living with 3 close in age to either validate my reservations about the idea or to tell me I'm wrong lol. My husband thinks my feelings would be temporary just like the 2nd time mom fear that your 1rst will feel replaced or you wont love your 2nd the same/as much etc. He thinks my feelings/fears would be proven wrong just as those fears were. So these are my fears....

1) One will always be left out. Two will be close and one wont be. One will be excluded.

3) You can't equally spread/divide yourself out between 3 kids and still have some leftover for yourself. It's too much. Someone would always be lacking attention. Someone wouldnt get enough.

4) middle child syndrome is real

5) the oldest would feel too much responsibility/too independent

6) it would be too expensive when it comes to extracurricular activities etc. Money would he too tight.

7) I was lucky to recover physically twice and I wont get lucky again.

8) It's too difficult to watch over/protect that many in public settings...grocery shopping etc? You wont be able to pay enough attention.

Can any moms of 3 offer some feedback on these ideas I have? Am I right or am I overthinking it? Or a bit of both? For backstory I have 2 daughters...one will be 3yrs old in August and the other is almost 16 months old(they're 20 months apart.)