Those girls need to be thinned, and yes you will loose bud sites..
Look at like this,it is a insurance policy for better buds and crossing the finish line with your harvest intact...Clones are the Bonus..the problem arises when you will need to thin them again and have even more clones...Clones for your summer out side grow, clones for your pot growing neighbors and friends.....It is difficult to toss a perfect clone candidate in the trash...