This itinerary is definitely ticketable with everything in J. Books into D class. PM me if you would still like to do it.
You can even add an extra SYD-some capital city in Australia for an extra $20-30 to be used for a later separate domestic trip. Eg. adding SYD-PER in J in say March 2019 on the end of the below itinerary adds $25.
	
	
	
		Code:
	
	
		  FLT/DATE       RTNG   CKIN TM DEP   ARR     TM EQP ML    DURA  DIST        
                                                                            
  QF 127 D 15JAN SYDHKG      1  0940  1550    1  388 LR    9:10  4571        
                                                                            
  JL7040 D 17JAN HKGNRT      1  0105  0615    2  333       4:10  1826        
                 HKGNRT OPERATED BY CATHAY PACIFIC            CX  524        
                                                                            
  JL 006 D 17JAN HNDJFK      I  1100  0945    1  773 MM   12:45  6773        
                                                                            
  AA2306 D 19JAN JFKSAN      8  1729  2044    2  738 D     6:15  2446        
                                                                            
  JL 065 D 24JAN SANNRT      2  1135  1645+1  2  788 MM   12:10  5558        
                                                                            
  JL 771 D 25JAN NRTSYD      2  1855  0640+1  1  789 MM    9:45  4844
	 
 
	
	
	
		Code:
	
	
		 1   SYD QF  127 D 15JAN 0940  OK DNN0NOCE        15JAN15JAN 3PC            
 2 O HKG JL 7040 D 17JAN 0105  OK DNN0NOCE        17JAN17JAN 3PC            
 3   NRT    ARNK                                                            
 4 X HND JL  006 D 17JAN 1100  OK DNN0NOCE        17JAN17JAN 3PC            
 5 O JFK AA 2306 D 19JAN 1729  OK DNN0NOCE        19JAN19JAN 3PC            
 6 O SAN JL  065 D 24JAN 1135  OK DNN0NOCE        24JAN24JAN 3PC            
 7 X NRT JL  771 D 25JAN 1855  OK DNN0NOCE        25JAN25JAN 3PC            
     SYD                                                                    
FARE  F AUD    6385.00                                                      
TX001 X AUD    12.90-YQAD TX002 X AUD    61.68-WYDE TX003 X AUD    60.00-AUDP
TX004 X AUD    20.30-HKAE TX005 X AUD    27.10-G3RE TX006 X AUD     7.60-I5SE
TX007 X AUD    28.50-SWAE TX008 X AUD     6.40-OISE TX009 X AUD     7.50-YCAE
TX010 X AUD    24.30-USAP TX011 X AUD    24.30-USAS TX012 X AUD     5.30-XACO
TX013 X AUD     9.30-XYCR TX014 X AUD    15.00-AYSE TX015 X AUD     6.00-XF  
TOTAL   AUD    6701.18                                                      
GRAND TOTAL AUD    6701.18