Millefleur is a colour, not a breed. You can have a bantam with large fowl breeds, but you need to observe your flock dynamics and keep an eye out for bullying, two would definitely do better than one.
Agree with with @featheredplanets, the most common breeds I have seen with Mille Fluer are belgian d'ucles (a bantam breed) and Pekins/Cochins (usually the bantams). If you're just after a similar look in a large breed then Jubilee Orpingtons may be for you. Tolbunt polish is another similar colour, but again smaller birds that may be more likely to get picked on.