Yes, Sifu Lam seems like a good guy and has good videos.
The idea of private training for people interested in learning Ving Tsun but are far away from quality instruction should consider finding a partner or creating a group on their own locally. Then, as you do things like this - going to seminars or take trips to get periodic training - you can come back and train together. Ving Tsun must be trained with at least one partner. And you might not want to be a "Sifu" or open a school, but it is a good idea to try to share and teach others as it re-enforces your own learning.
Good luck with your kung fu!
Moy Yat Kung Fu - Martial Intelligence