Hello!
Hope you are fine. I have read your brief requirements, I having more than 9 years experience of configuring and deploying MOODLE can offer you the best quality and timely delivery of the project.
I can customize MOODLE for you school learning environment, I however, would like to know following, before submitting my final proposal:
1) Do you need live interactive sessions along with video conferencing? For this do you need a specific plugin to be used?
2) If the above is true, do you have required Server configuration?
3) Or do you need only videos, presentation sharing, chat, forums, assignments, attendance?
If you spare time, we can have a quick chat to discuss these and more before finalizing the bid.
Looking forward to hear from you soon.
Thanks and Regards.