I have a project is a summit on wordpress as online.
People will come to website on 2 days. And we are waiting approximately 1.000 people on same time. They will watch webinar on website but webinar is youtube based so there is no load on host as video.
I bouht a good server but I could not do any load test to my website. Thatsway I opened an Cloudflare account but I am not sure can 1000 people watch webinars without any loading problem.
What do you advice me on cloudflare. Should I buy Load balance?
Can free cloduflare advantage for me?
If somebody can give me advice place? This project is non-profit event so I dont have too much option 
Thank you regards.