Why would you think Admissions will make a decision before you COMPLETE your application ? There is a reason for everything in the Application, and transcripts are important. Sure, every once in a while USNA may grant an LOA for someone that is a really good candidates, but for most there is a process. Complete Applications, Admissions Board Review , and if Admissions Board qualified (and you will not be told whether you are Q or not), your application will got to Noms and Appointments, a seperate office in Admissions that matches up Nominations (you don't mention whether you have a NOM) with Qualfied Applicants (typically, giving the Offer of Appointment to the Most qualified person in the particular Nomination Pool).
Bottom line, a lot goes on after you COMPLETE your application, and Candidates are not informed of status through the process. As a practical matter , while some find out earlier, most don't hear until Feb/March time period (if you are curious, check the past year Admissions threads and see the timing ..last year was kind of abnormal and later than normal).