Cutting the cable, lets talk options and media setups

Well, I know Roku has it to where you can either get the box (there are 3 choices) or the stick like Chromecast or Amazon Fire TV stick. I was thinking maybe get the box for the main TV and the sticks for the other 2. Would that be ok or should I just get a box for each TV?

The sticks would probably work - I haven't looked into those. It will probably depend on whether your wireless signal is strong enough and whether they can support different streams on each TV (as opposed to just projecting the same content to all TVs).