H.H.
if he is going to be moved to a new room in August I would wait and start then. This change is going to be hard on him at first and you don't want to put him through 2 major changes at once that close together and getting to know 1 teacher then moving to another in a few months will make things harder on him and with being in the middle of potty training he is already making a big change. I would wait.