'Fixer -- He's asking about AE-4, not AE-34. Mount Baker AE-4 was a C2-T (i.e. Tampa-built) cargo ship. Build & launched in 1941 and striken in 1969.
Starting point in plastic could be one of the PitRoad 1:700 scale Liberty ships or the 1:350 scale Jeremiah O'Brien/John Brown. Know going in that some scratchbuilding may be required for the class-specific superstructure, goal post & gun layout.
Another alternative may be the Battlefleet Models C-2 Sea Witch in 1:700 scale resin & brass. It has the correct goal posts & several gun options are available. Being resin, it may be a problem for a novice ship builder.