video conferencing/music education website

Hi Andrei, Remember me? You did some work for me in the past. I tried to contact you at your yahoo email address with no luck so I am posting this project here. I am in the very beginning stages so far. I have only a basic layout for the website, but it would be using DRUPAL as a CMS if you would consider that a good option. The site itself would have login users as teachers and students. Teachers could select their availability from a calendar among many other options (type of instument/language/level of ability/etc.) Students will be able to sign up for lessons at 1/2 hr intervals or as a weekly/monthly option based on the teachers calendar. They would need to make payment via a cart and update the teachers schedule automatically. The video component would allow teachers and students to EASILY connect via live video for their lesson. It would also include basic tools for the teachers/students to upload files, write out music, use a metronome, etc. I would like to discuss the ways that this could be accomplished via chat/IM if possible before accepting a bid. Thanks for reading this. Feel free to contact me. I hope to hear back from you soon. Dave