It’s up to you, but completing that PPL before going integrated would likely mean nothing to the school and you would have to redo it all. Maybe get up to solo standard to have confidence you “have what it takes”. but don’t worry too much about completing it all. Also get your class 1 medical asap in case there’s an underlying issue. You don’t want to spend time and effort getting into a school/cadet scheme only not to be able to start.