Although this guy is in China and has resources, he has zero experience dealing with bitmain or even with mining in general. No offense here, but I'm not sure he'll be able to pull this out.
Bitmain is not some kind of alienesque entity, it's a business and they want to sell a product. If the man is who he claim he is (which is easily verifiable once the deal is confirmed) he has experience in dealing with suppliers and do business in China.
Nimo already managed to get in contact with Bitmain's rep which is not something retail would be able to do, so I'd give him credit before shitting on the group buy.
My only concern is that he kinda disappeared, an update of sort would be appreciated.