mmmh problems with space. before commiting then try to find out if you could rehomed your little bunnies .
before you think of expending look at your lifestyle: have you got enough time , enough space , and yes the vet bill?
you little bunny should not go on the lead but the area you provide is not prob safe?
if the area is safe just leaves a little pile of her fav veg near by to keep her busy? Lay around some pieces of old drain pipe or half terracota pots layed down stuffed with hay to keep her amused? x