Looking over the KH250 kit at readytoflyquads com I 'm planning to also buy a Taranis X9D plus...

[G+_Steve Prior]

Looking over the KH250 kit at readytoflyquads.com.  I'm planning to also buy a Taranis X9D plus with telemetry.  I'm not comfortable with not having a low battery warning, but this doesn't seem to be included in the KH250 build - can someone suggest what I should buy to add this?  Something through the telemetry would be great, but at least an onboard buzzer for starters.

 

The other thing is I really like the LEDs on the Syma X1 to indicate which way the drone is facing - what's the best way to add that to the KH250 build?

 

Since I'm placing an order with them I also want to know any other accessories that aren't absolutely essential, but would be really nice if I had them.  So far "Speed Controller Calibration Cable for Quad" , maybe "ReadyToFlyQuads Bluetooth Module for Android Configuration",  "Discovery Buzzer", and "XT60 female connector" (to help with soldering the male connector).  Are any of these silly or did I miss anything?