As Toyota Rush is not launched yet, their is no information available from teh brand's end about the head or leg room in the car. Still, as this falls in an SUV segment, we think that a 6 feet tall guy will not face any issues with the comfort.
Safety features like ABS and airbags have become mandatory, so we can expect Rush to be equipped with airbags. Rest, we would suggest you to wait for its launch.
The comfort of the car can be judged by taking a test drive and that can be possible after its launch only so we would suggest you to wait till it gets on the road. So that we can share with you our experience and provide you a fruitful comparison with other cars.