first timer here, considering to downgrade from condo. I understand there is a 30month wait, but can I apply a new BTO/DBSS/EC first after selling away the condo since I have to wait a few years before the BTO/DBSS/EC will be ready to move in? or i have to wait 30months then apply BTO/DBSS/EC which will be completed only in another few years? thanks in advanced