range hood confusion
Clarification on the question may change this, but I took a look at the Wolf "Ventilation Guide" on their site, and it does recommend their PRO hoods for the dual fuel ranges.  The 36" model calls for a 900CFM hood, but for the introduction to the page it says: 


  Ventilation performance is measured in cubic feet per
  minute, or CFM. The chart below provides CFM suggestions specific to the Wolf cooking appliance and ventilation
  system used. 


Now the use of the word suggestions tells me that these are not hard requirements.  Another section of the manual has this to say:


  The appropriate airflow capacity is determined by the
  cooking space and cooking style. ... Greater exhaust capacity is required to handle the moisture
  generated by boiling large pots of water or the grease and
  smoke from grilling or frying. Cooking with high heat or
  cooking aromatic foods may require additional CFM and
  increasing the capture area...


That shows that they can't possibly give you a hard requirement because the variables are all usage related and also depend on the space the range is going to be set in.

These luxury brands also live on customer experience, so if anything they are going to pad any requirements to make sure they meet expectations.  You don't want someone spending $15,000 on a stove to complain to their friends when the boiling spaghetti pot steams up the kitchen.

So, I say get the best hood that you can, but if you're not going to do much cooking, 300CFM will be fine.  If you do end up hosting a party and the stove goes into overdrive, you might get more odor or moisture than you would like.