Emailing professor: Is my profile good enough for this position?
The conditions invite potential candidates to self-assess their profiles.  The reason is probably that the University receives a lot of applications per post and HRs want to save a bit of time during the shortlisting stage by ensuring that candidates apply only when they are ready.  In all fairness, it seems that you want your potential supervisor to do a bit of this work for you. I am not sure it is a good idea.