Are there innate limits in chess performance? Are they tied to IQ and amount of deliberate practice, and if so, does that mean if you know the player's IQ you're able to estimate the time of deliberate practice spent learning?
'IQ' is a notoriously flawed way of measuring intelligence.

A high rating (NM and higher) is a sign of intelligence, talent, and hard work.

Talent is missing from your equation.  It's why some people who play once a decade can mop up on normal club players.