@Trev1 

For your information, it is suggested to use the powerline adapters under the same power circuit due to the powerline interferences. 

While cause you have purchased the TL-PA4022P, you can relocate the second unit to another circuit and test its performance. No other configuration needed if you have paired them. 

Besides, the TL-PA4022P does not support wifi function, you can get internet from it by wired cable only. 

@Trev1 

Hello, you can order one extender first and work with the current powerline adapters.

Just in case, you can check the warranty policy first, if the unit does not work well, you can return it within a certain time of period. 

Good day.