I am not sure that the monitor will have Wireless (not necessarily WiFi, but maybe bluetooth) but the laptop should have HDMI or USB-C where you can connect to that (maybe with an adapter if your monitor does not have USB-C or HDMI) for sure so you could use the 200-inch or the TV (though would the Mrs allow you use the TV?

). What model number of the monitor do you have? Should look like Dell E20xxH or something similar.
As to the Chromebook, I am not sure if it works on those but Chrome has AdBlockPlus plugin, which will take care of the ads.