I think birch doesn't get enough credit and I'm incorporating it into my hardwood mixes at around 5-10%. It's plentiful, sustainable, grows like a weed, seasons quick when split, burns with good heat and coals and compliments the denser hardwoods in the mix perfectly.
We sell birch in bundles because it's hard for us to get large quantities. I'd rather sell a few bundles once in a while instead of selling a couple cords to one customer and be sold out for the year. Here in Canada, if I could get 100 cords I'd sellout every year. People love it, and so do I.
When it sits for too long, the bark loves to jam up splitting wedges. With this being fresh, we haven't run into that much yet, but we are hoping to process it all before that becomes an issue.
We could probably run 90% of this through our smaller processor, the 315, but sometimes it's fun to use the bazooka (plus the 365 is our main demo unit).