Have you thought about keeping him indoors though? Reason I ask is that cats are natural hunters, which is bad for any native wildlife in the area and male cats (even desexed) can get territorial. Which may result in some hefty vet bills from him getting into fights with other cats in the area, or the danger of him running across the road at the wrong time.
We would like he to be an outside cat, we live on 4 acres and we would like him out there with the girls and the dogs to watch for snakes, we also want him catching any of the field mice that are running around the place.
He will be kept inside over night and TBH i don't think he will be catching anything our dogs aren't already trying to
I haven't really seen any cats around so am hoping once he's desexed he's not wandering off a couple of k's away into paddocks looking for trouble.

I guess we just have to wait and see how he is, hopefully he is a well behaved little man.