Hmm... The 4 concealed pon Yakuman eh...
I've gotten something similar point wise in a different mahjon game... Rather than a Yakuman though, I managed to get a 14 han hand...
The total han count up was:
1 Reach
1 Fully concealed self draw
1 Endless (or All Simples as the BvS site has it)
2 Three Concealed Pon
2 All Pon
7 Dora tiles
Yes, 7 dora tiles. I really lucked into that, especially since both the dora indicators for those 7 dora tiles came from uradora...