Hi guys! It's time for Nicco to get neutered...

I'm really worried about him going for the surgery! Since this is my first puppy ever, I'm not too sure which things I should make sure he has and which options I should opt out of. I called the vet and they said that the base surgical fee is $305.02 and the exam before the surgery is $59.32. I then have the option of providing him with additional support such as: IV fluids, medication, and respertory, they check blood pressure for $47.25, fluid therapy if needed for $29.40, give mediation and an e-collar for $35, Microchip for $60.06, and anesthetic monitoring.
Now, my question is..which out of these would be a good idea to do? If I should be getting it all then I will (which comes up to $585.91), I just want to know if there are certain things that I don't really need or Nicco won't really need. Any help would be appreciated! Thank you!