RCR will be time consuming unless you have strong notion that there will be cases filled agaianst you.
WHat's purpose if she has deserted for 2 years and living in another city?. Save on manitainance. She will win it exparte. I don't see the reason.
Counter productive for Child custody at the time of RCR as you are seeking restitution and you are seeking separately custody as well.
Custody has two meaning. legal and Physical. You mayn't get physical custody unless you prove she hasn't been good mother and you are better parent for the future of child.
You may get legal cusotdy if fought right.
Visistation is only thing you will get in RCR and that too after many court date. It would be atleast a year before you see the kid.
If no reason exist to cohabit together than mutual consent divorce is best move forward