People are regularly asking whether they will be in the cap or not. The point is - its a guess!!! and you can also take a guess after going through http://www.cic.gc.ca/english/immigrate/skilled/complete-applications.asp (CIC website).
If someone is seriously doing all the efforts like ECA, IELTS etc then there is nothing more left except sending the application. So don't hitch after doing all the efforts. If you have already arranged all your documents and spend $$$ on them (ECA, IELTS cost) then what are you putting at stake - courier charges
So don't waste time in asking and waiting for replies whether you will be in cap or not. Take a logical guess and apply!!! There is hardly any time left. The courier will take 5-7 days to reach (if all goes well) and last week of December will practically be a holiday (Christmas and New Year).
So the right question should be - "Can I send my application within time frame"? If yes, then DO IT!!!