Epmp 3000AP Metrics to look for?

Good Morning,

I am looking for the metrics that are good to monitor through SNMP to know that the 3000AP is not performing the best, can someone help me out or point me in the right direction?

I would think the minimum would be

(1) Total Frame Time Used
(2) Bandwidth (Down/Up/MU)
(3) GPS Sats visible and tracked (if you use sync with the built in GPS)
(4) Station Count / Session Drop count
(5) Reboot Count

and maybe

%Packets per MCS
CPU Usage