Here are some HD combos, he's missing options that don't involve NeoMax and some off of counterhit jump CD:
B, DF+C, (BC) D, DP + K, ((HDC) QCB + B, (HDC) HCF + C) x 4, HCB x 2 + AB (100% drive, 2 meters, 673 damage)
B, DF+C, (BC) D, DP + K, ((HDC) QCB + B, (HDC) HCF + C) x 4, HCB x 2 + P (100% drive, 1 meter, 581 damage)
B, DF+C, (BC) D, DP + K, ((HDC) QCB + B, (HDC) HCF + C) x 5 (100% drive, no meter, 517 damage)
D, (BC) D, DP + Kxx((HDC) QCB + B, (HDC) HCF + C) x 4, HCB x 2 + AB (100% drive, 2 meters, 706 damage)
D, (BC) D, DP + Kxx((HDC) QCB + B, (HDC) HCF + C) x 4, HCB x 2 + P (100% drive, 1 meter, 612 damage)
D, (BC) D, DP + Kxx((HDC) QCB + B, (HDC) HCF + C) x 5 (100% drive, no meter, 541 damage)
CH Jump CD combos, 100% drive
CH Jump CD, DF + C, (BC) HCF + A, HCB x 2 + P, (MAX) QCF X 2 + AB (100% drive, 3 meters, 839 damage)
CH Jump CD, DF + C, (BC) HCF + A, ((HDC) QCB + B, (HDC) HCF + C) x 4, HCB x 2 + AB (100% drive, 2 meters, 635 damage)
CH Jump CD, DF + C, (BC) HCF + A, ((HDC) QCB + B, (HDC) HCF + C) x 4, HCB x 2 + P (100% drive, 1 meter, 555 damage)
CH Jump CD, DF + C, (BC) HCF+ A, ((HDC) QCB + B, (HDC) HCF + C) x 5 (100% drive, 0 meter, 479 damage)
CH Jump CD combos, 50% drive
CH Jump CD, DF + C, HCF + A, (SC) HCB x 2 + AB (50% drive, 2 meters, 559 damage)
CH Jump CD, DF + C, HCF + A, (SC) HCB x 2 + P (50% drive, 1 meter, 455 damage)
CH Jump CD, DF +C, HCF + A, (DC), QCB + B, HCF + C (50% drive, no meter, 331 damage)