Yes! we can publish v173 for now & create a copy of v173 to make v175 for the FLIFO activity scheduled for tomorrow. Since I understand v174 (with Code Share changes) is not ready yet for Prod publish.
However, note that by above action – V174 would get obsolete & you might have to redo the new route level update by copying v175.
FYI – new PCC would not need any update as it NOT version specific – so just adding the routes by you.