LTS aka Hikvision is one of the best NVRs, you could modify it with a quieter fan. But why would you put it in a bedroom? Most common people put it in a garage or attic
For you? most definetely! If you can manage to setup NVR and concerned about bandwith then I am pretty sure you can manage to setup your network and cams without affecting your bandwith.
I have posted this before somewhere, if you search my posts you can find the setup I am using with Android box with Amlogic S905 and 24" monitor, but really any modern streaming box will do. I am considering to get this one now
Yup android tv box is worth it.u can have 3 floating windows(tinycam pro app)while u watch netflix or play games.not that I do that but it can be done.