Would you recommend a guy find some three year old wethers ready to go, or start with some young'uns?
If I were to start again, I'd find two adult wethers to use. Look for the ones where the owners are moving and are forced to sell their stock. Otherwise, you stand a chance of getting ones that are "culled" from the herd. Always exceptions of course.
Goats are incredibly smart and trail-wise. They will spot wildlife a lot sooner than I do.
Babies will be more bonded to you if you bottle feed them. But you can still have success with adults, but ya better high line them at night!