+1 on Paul's message.....
To add real world numbers for an RV-10 (the only Vans with more than 2 seats) here are my Fixed costs:
Hangar: $5K per year
Property taxes: $3K per year
Insurance: $2K per year
e.g, $10K/yr before you ever turn on the engine. I have over 3,000 hr, CFI certificate, etc. Plan on your first year insurance being at least twice as high. I'm also in expensive California; some states have little or no property taxes (oh, I forgot, in CA sales/use tax is 9% (one time)).
This should get you started on finances. Remember, as an EAB, you cannot recover any costs by having a lease-back.
Now, if you can live with just one passenger seat, used RV-6A's are available for a lot less money (and property taxes and insurance tend to scale with the value of the plane)
Note on Vans terminology: RV-10 is a nose wheel plane with no tail wheel option. For all others, RV-6, -7, -9, -14 are tail wheel planes; RV-6A, -7A, etc., are nose wheel planes.