If it were me and I was that concerned with getting the best blank I would go to Cecil Fredi in Las Vegas and look at blanks in person. Not that much money to fly to Vegas, Southwest fares BWI to Vegas are $199 each way. Then you can see fifty blanks in a few hours. His in put will make it much easier. The man knows wood and will steer you in the right direction.
Buying wood over the internet is a very hard thing to do. Much easier to hold the blank in person and see the full potential and most of the flaws as well. I have bought 250 plus blanks over the internet and ended up reselling 200 of those later. Most looked decent in pictures but were not that great in real hand.
Getting ready to sell 25 more on Ebay as I am paring down my wood pile. I do not advise going to Ebay for wood. Most of the wood on Ebay is what I think of as second tier grade even when very fancy. Poor layout and often less than ideal drying of wood. the one I am selling will be OK for thru bolt guns but not for doubles.
Maybe you need to decide on type of wood first. English, Black or Claro as a start. Crotch, fiddleback or fancy grained next. Then the choices get easier. My first choice would be English crotch with dark mineral lines and some fiddle. Then you would have it all in one blank.
Do not forget to have your stocker look at the wood. He may see problems you will have missed and his input may save you a lot of money in the end.
