Birdsnest or 2, will i need to dose?

[Nor'easter Reefer]

Looking at getting my first few corals soon. My question is this: If I have 0 corals and pick up a half dozen frags or so, hypothetically 2 different birds nest, 2 lps, and maybe a couple softies of some sort, would regular water changes be enough or is the 2 birds nest going to mandate dosing? I'm not opposed, I just don't have provisions on hand and don't want to be waiting on shipping while a coral withers away

**edit** i have a 120g tank with approximately 45g of sump

 

[Nate Chalk]

You will have to test demand