Neither course of action in my view is an option.
At the age of 1 year your boy (as do all children of that age) needs the intense loving care of both his mother and father and will continue to do so until he (or they) are some 8 years old.It gets easier then,but believe you me at the onset of adolescence the task is more challenging but still bloody good fun.
I speak as the father of four boys, hence I think our experience is valid ,and we are still learning too,the youngest boy is 9,followed by a 13 year old then a 16 year old then there is oldest boy who is 42,whom I had to bring up from the age of 10 due to his mothers death in a car acident.
So we ( the wife no.2 and I ) are going down a well trodden path but the way does change and it's fun.
By bringing in a surrogate parenting system you are depriving yourself of an untold amount of pleasure in watching your child develop.
Worse than that though is the fact that you are denying your child the pleasure and the right of getting to know his parents and bonding with them properly.This will lead to problems in the later years for you all.
That care will continue throughout the childs life till at least the age of 18 years old .
I assure you even when your kids are in their 40s they still have the ability to tug your heartstrings.
A happy childhood is a right,children are not something one can pass on to someone else.
Parenting is a lifetime job if you are not willing to accept the duties it entails you shouldn't have had children.