Usually people recommend smaller injectors just for drivability sake. But if you have ID1000's there is no need to worry about this. ID1000s drive exactly like oem, but have nearly twice the head room. Sometimes people want that room, to do 93/E85, sometimes people want the room for a bigger turbo.
Either way, the size of your injectors isnt always as big of a deal as some people make it out to be, as in the past, bigger injectors meant drivability problems in the low end. If you get good quality injectors though, the size wont make a difference. Other then price I guess, but if you already have them there is no sense in changing them.