Cecil, I don't want to end up with a monstrous panel, unlike some I've seen. I just like the idea of being able to take off and fly home after the failure of a Dynon instrument.
Easy, look out the window.
If the aircraft is making lots of noise and the controls are firmer, your going too fast.
If the aircraft is very quiet and the controls are sloppy then your going too slow.
If you can't read the road signs, your flying too high.
Bit of tongue in cheek but get the idea?