A pin under bridge layout may limit what you want to do. It controls the backend of the ball rather than enhance it. Also, the layout you're describing is not a double thumb. Double thumb is 60*x4"x40* with a P4 hole that has a 1" gap between the thumb and x-hole which allows you to raise the diff of the ball by continuing to drill the x-hole with a bigger bit. You would also need a specific ball pin placement (preferably 4") and a specific top weight.
Getting to the "meat" of your question, of the 3, I'd go with the 65* layout, however IMO, I'd modify your layout to get ball more downlane and shrink the second angle so as the ball is not so sideways. If your playing deeper in, im assuming that the lanes have dried a bit and your chasing the oil so I would think you wouldnt need such a large 2nd angle as the ball will be doing a lot the work for you. Again, just my opinion
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