30-40 still sounds like a small family, I think even Decavalcante has more made men than Philly?
Philly has about 50 members but only about 20-25 are probably active.
Think the DeCavalcante family has about 40-50 members, don't know how many are active though.
The DeCavalcantes are de facto under the Gambinos and the Philly family answers to the Genoveses.