these questions are very specific and nuanced. You might not get 100% accurate information on facebook. Contact Siam Legal or similar legal professional to help you with the details.
Oh you are using an agent for the condo rental, i see. What province are you in? I was not asked for rental agreements on an ED visa. Not until I changed to retiree.
Also you cannot change from Education visa to Elite visa until 3 years after your Education visa has expired. Don't know why, but that's the rule as I understand it.