Large meeting inquiry

Hello, I am launching a webinar where I am targeting to host up to 1000 attendees per session. I currently have the pro subscription and planning to adjust to large meeting. the event is a training session where I will be providing  a training, sharing my screen and asking participants to reply to my questions in the chat, is large meeting enough? Do I need the webinar subscription or the large meeting subscription is enough ? thank you for your support.