PCC is not compulsory to be sent along with App, Police Certificates can be sent later, generally your VO will ask for PCC, at the time of Medical request.
The only issue i see is IELTS, as rules vary from place to place.
The best thing at present you can do is, Send Original ECA report (As you would have two Report copies) along with cover letter,
and as a back up plan start preparing New app and send it too after getting Original IELTS TRF , with Original second copy of ECA without any PCC.
if you are lucky to get PER for your first app, then cancel CC from second app.