Ceiling entrance reserved 7.5 downlight position, want to replace with a ceiling light, any ideas? Expand the hole? Specialty lights?

The weight of the downlight is relatively light, so this position of the ceiling should not be reinforced;

Change into a ceiling light is possible, of course, the weight do not choose too heavy, crystal ceiling light weight is relatively heavy, must be reinforced before installation;

The weight of the chandelier is even heavier, it is more need to be reinforced before installation;