I too have had success with a 902 as an Access Point and 902 as a client device. I recently updated both to OpenWRT to get lower power radios as well. Here are links to the recipes I used for OpenWRT on both the client and AP:
OpenWRT AP config https://www.whatsbestforum.com/threads/review-the-best-yet-most-affordable-network-switch-tplink-wr902ac.41708/post-1099127
OpenWRT install on Mac https://www.whatsbestforum.com/threads/review-the-best-yet-most-affordable-network-switch-tplink-wr902ac.41708/post-1099130
OpenWRT Client config https://www.whatsbestforum.com/threads/review-the-best-yet-most-affordable-network-switch-tplink-wr902ac.41708/post-1099148
Next for me is getting the 902 AP on 3.3V (shared supply with my 902 client, while I wait for my second Ian Canada LiFEPO4 supply to arrive). That is an experiment for the next couple days