It would be tight. I would expect you have about 1 hour. Here is the math.
1. You have 210 minutes, assuming on time.
2. Although I could be wrong about this, a meet and greet will speed up your way to the immigration counters, but will not actually speed up the immigration process (especially you can't use e-channel unless you have a HKID). So it will take you about 15 minutes from gate to car.
3. I would expect a travel time of 40 minutes each way, given the traffic.
4. You need about 15 minutes for the car back to the gate, as well as at least 30 minutes before departure.
5. The remaining balance is 70 minutes.