I'd suggest the first step is to do a Wi-Fi 'survey' using a good app such as inSSIDer on windows or one of the Android apps (there are decent free ones).
You can then map the strength and any contention (say from neighbouring hub) in each room/location and form a view of what solution is best.
You will know best what speed/stability is required at each point - for example I have some IoT (smart plugs) at the extremes of my property - speed isn't much of an issue but reliability is.
------------------------------------------------------------------------------------------------------------------------------
I know a bit about Wi-Fi, Telecoms, and TV as I used to do it for a living but I'm not perfect so don't beat me up... If you make things you make mistakes!