Thank you patlee for your help,
It maybe i misunderstood, because of my english... english is not my 1st language and it looks like I still "misanderstand" sometimes
Anyway, this pot was 1inch bigger, so I will use the next size. But, I am not sure it will be much room for next year growth... It looks I will have enough to accommodate the growth for the 5 news pseudobulbs.
Another little worry of mine, the old pseudobulbs at the centre will be pretty much buried after re-potting when the new ones on the edge will be just where they should be. Should I not worry too much about it?