I have never owned a stud, only pets and I have had then neutered as early as possible 5 - 6 months.

I have never had spraying problems or roaming problems (well they have disappeared for a couple of days at a time), so not really sure about that.

The three I own now are indoor cats, they are curious about the outside world but they are not climbing the walls to get out. They do have an outdoor pen and I do take them into the garden on their harnesses.

I would suggest you speak to your vet, who will be able to advise you properly. Sometimes unwanted behaviour can become a habit which is much harder to stop.

Sue