Essentually I want to make a clone of an online teaching platform

I am looking to create a online portal , potentially based on Moodle but I'm not too sure. There would need to be a backend for multiple teachers to choose slides etc from the online Catalog created by myself (admin) Once the teacher is in the classroom it will be 1 teacher and 1 Student..... Remember there maybe multiple classrooms happening at the same time. It would intergrate with zoom or Skype etc to do the hard work etc provide the video and basically like the pic provided the student pic on left, teacher below, middle screen is the slides/ courseware , ALL INTERACTIVE/ using annotations so the student and teacher can write on it VERY important is on the right side is a chat box, Student can send messages using their language (mostly chinese ) and it will translate to english for the teacher or vice verser - teacher writes in english and it will translate to chinese for them ( its possible they have to click to do this) anyway it could be done via google translate api? pricing negotiable and and it Must be accessable for students on tablets and laptops Currently we have a website [login to view URL] running on WordPress and hosting by host koala, potentially all the teachers could use the system if you put it on our website. Anyway let me know what you think