Thutn,
Are you experienced or proficient in another style, or are you new to martial arts and beginning from scratch?
I think videos can be extremely beneficial to learn from, assuming you already have several years of practice in a similar style, and can deduce the deeper applications in the movements beyond simply parroting the movements in the video. If you have already been studying a differnt PM style, then I think you could learn additional techniques quite well from videos.
If you are a beginner though, you will probably pick up more bad habits and mistakes than you would learn anything useful.
Why 7-star specifically?
And others are correct, a 1hr drive is easy if it means good training and instruction.
And all that the Lorax left here in this mess
was a small pile of rocks, with the one word..."UNLESS."
--Dr. Seuss