You could both be FIRED AND crazy. They are not mutually exclusive :)
At 53, I think the key will be flexibility. There is so much you can do when there is an inherent downturn, including going back to your old job full/part time for a little bit or longer(even at a lower wage if need be), getting a part time job to make up the difference, spending less, hobbies that pay, Uber drive, suspending inflation increases in bad years, medical travel if ACA blows up, etc.
Congratulations. Keep us posted here when you pull the plug.