It reminds me quite a bit of the Shooting Star Boxing/ Lau Sing Kyun (流星拳) of Ho Lap Tin (also of Tang Fong lineage). It seems to be a further integration of Hap Ga/ Lama Pai, as well as a re-ordering and development of existing techniques and principles from the GJFFK and the Ng Ying Kyun.
Thank you Tony Rossell, both your sincere generosity in sharing your standards of research, and for promoting your Sifu's line of Hung Ga Kyun.
Best,
Michael