It will be what you make of it. I have a 2.5yo daughter and caught by suprised be a legal separation. I have my daughter 6 of 14 overnights. I never used to think of it, but now All I think about is being that best father I can be (along with wanting to win back my marriage with my separated wife).
Seems odd that you have lived with STBXW throughout the divorce process and seem to take it in stride - have you tried separation first to see if you both can live with split time with your kids ?