Moving form Cable card to to OTA question

I have a Roamio that has a cable card slot, I want to save money and go to OTA. Hopefully I can do that. I live in an apartment and my only antenna I can use is an indoor and can't face the direction towards the broadcasting towers. I bought a real good indoor antenna, and am waiting for it to arrive. Hopefully I can get at least ABC, CBS, and NBC and then just steam the other shows I like. But am not sure how that works. I just started subscribing to Hulu, and I am wondering if the unit will utilize Hulu to record shows? I think Hulu is kind of like Netfix. Unless I'm missing something, I could never set Tivo to to record a Netflix movie, so I'm thinking that I will only be able to "watch" (steam) shows from Hulu. Plus I guess I can live with the fact that it will not record "same day showing" of my shows. Hulu will get them the day after. If they won't actually record, I'll have to sort through the lists and find the latest showing and then steam it. I guess what I'm asking is that a OnePass will not necessarily record all my shows unless it can get them over the antenna, right? I changed all my OnePass' to include streaming, and "new only" but now in My Shows it lists a whole bunch of possible show episodes that I can stream, seems to confusing. I think OTA and streaming seems more complicated that just sticking with Cable, recording and watching my shows. Will have to see how this all works out when I get my antenna and do a new guided setup.