Fantastic looking steaks. I too have recently used the coffee wood charcoal. I would characterize the pieces as medium in nature with very few chips and fines.
It is pretty much perfect for grilling. The temperature raises in a hurry, imparts a nice smoky flavor, and has a fairly homogeneous size. Fogo has been my standard, but I like the coffee wood more for high temp grilling. Due to the massive chunks, Fogo is great for smoking, but I find the large size chunks impair high temp exposure to the protein.
Benton