No, it isn't... AMCAS takes 4-6 weeks in verification, which also depends on when transcripts are received by them. LORs are important for the application review, and some programs won't extend invitations to interview unless a minimum number of letters have been received. Responding to secondary requests is also important. In the past, others have started a thread on questions for secondaries allowing to get a head start for some.
There are several quality MD/PhD programs with no secondary ($) applications. A list should also be developed...