So this is an unusual concept, and you aren't building characters that are normal Pathfinder heroes - see the game information for more on this. Rather, you're playing the familiars of ordinary PC characters.

Your master is a level ten adventurer. You have all the abilities that are normal for a familiar of this sort, plus feats for each of their odd levels, as though you were getting a full feat progression; and base skill points of 4 per HD of your master. You may not have an improved familiar type as the feat (with the exception of Magical Child vigilante, and similar effects that allow your master to temporarily alter your type while present). You may take any familiar archetype with the exception of figment.

All characters have the ability to speak normally, whether they would have this capacity RAW or not.