I would describe an experienced PPL in this scenario as one who has between 500 and 800 hrs,
Not necessarily - 800 hrs built up over 10yrs+ does not, IMHO, mean they are experienced.
In those 800hrs, built up over a long period of time, many bad habits will have been devloped and from my own experience those 'experienced' PPLs with a few hours were the ones on the way to accidents.
If these types of PPLs were to then become instructors, what would the standard be then ??