I really don’t see the point in having a dog with balls that doesn’t need them. Their wee stinks, they try and hump everything and are more aggressive while they have balls.
Tha doesn’t sound anything like my 11 year old ‘intact’ dog. Basically judge each case on its merits. We always said that if he became an amorous pain he would get ‘done’. He never has done and so is intact. The bitcvh wa speyed from day one in case of other interested males. I have also seen great male dogs basically ruined by being done, no energy or enthusiasm, no interest at all in anything.
There are hormones you can try in advance of the snip that give an insight as to how the dog will behave post-op.