I'll be changing the pistons on my 360/426 stroker

going from 23cc dish pistons to 13cc dish pistons to bring compression up a bit . Am I going to have to balance everything again ? Or can I just slap it togetjer and hope for the best ? that is what happens when you don't think about everything when putting together an engine , just took what they offered as the flat tops would bring compression over 12.0 so just accepted the 23cc dish , without thinking about asking for custom dish pistons , until after I assembled things and realized only way to get the compression up was new pistons .
Thanks