Nobody knows if is too late, some people are starting to say that yes, because the 150 cap was reached and all applications will be queued, you need to be positive and try.
you can apply without register your occupation.
you don't need to show a WES certificate at this moment.
the process, they say that are going to do a pre-screening to see if your application is complete and they are going to inform you when this process is made, after that they are going to review deeply in your application and if is "right" they are going to nominate you.
until know nobody had received a pre-screening email, so I believe that the process has not started and they are in the process of collection profiles as many as possible, (is only my guest)
so go ahead,