If he is showing any sign of Hip Displaysia I would not use him in any breeding. JMO One, he is not a finished dog but two Hip displaysia would be hard to get rid of and even if you x ray future pups and they are clean, they could still carry the gene.
This right here...you’ll get 7-8 years down the road and kick yourself for breeding him and the headaches it’s gonna cause you. It’s easy to say coming from someone that isn’t in your position, BUT I’ve started over after letting my old dogs die off and not breeding my good dogs and them getting killed. It’s always worked itself out. It’s a marathon when it comes to dogs, not a sprint!
