The problem with the harlequin pattern is that it has been introduced into many breeds. I have see harlequin patterned Nethies and Holland lops. I’ve also see Rex bunnies with the harlequin pattern. Unfortunately, that means the presence of the pattern may not necessarily indicate breed.
The Harlequin breed tends to be around 8-10lbs. It doesn’t look like your girl will get that big. At 7 months, she is likely done growing in size. She will probably spend the next few months filling out a little bit. She might end up being around 6lbs. But that is just my guess.
Both your bunnies have the harlequin pattern gene. Your boy has the dilute gene, which gives the “blue” color. Looking at their faces, ears, and the fact that they have flyback fur… it’s possible there is some Havana in there. The large ears could be breed-related, or they just need to grow into them. I suppose time will tell. Meat breeds have large ears, but they are often 12lbs+.