Thanks dudes, I appreciate the kind words.
The 55s fit well on -this- 8.5". Its Normans shape, dude is big, so its almost an 8.6".
As fer the concave, its middle of the road. Not too steep, not too shallow, the noses and tails tend to be a little more squarish, especially on the wider boards.
Feel free to DM me if you've got more questions, I'm happy to help!