Well i would of doubled him up with a good expercented dog for a few times to see how he went and take it from there,
But to be honest its hard for us on here to say much as your the one that knows his capabilities on the roe is he an arse holder, Neck holder, Does he trip them whats his way style and he must be comfortable taking roe with having 30+ in his first season at 18 month old..
All i say is theres no rush with such a young dogs thats showing good promise on the bigger ediable quarry IMHO