| 
  The advantage to smaller is they are easier to carry, can't really think of other advantages?  Seven pounds is still very small, especially if you are not used to tiny dogs.  My only concern is if she says 7 but he ends of 10 lbs. will you be disappointed?  
 I have had 2 Yorkies, first one was smaller with short legs, not a fan of walking prefered to be carried.  Now I have a long legged one that weighs about the same 5lbs. and she loves to walk, hike, jump, climb etc.
 |