I use the Accuquilt Go die (in my Fiskars Fuse) to cut hexagons/triangles. I can cut all the triangles in about 2 hours.
I usually make the quilt about 60" x 60", which is 12 hex's across, and 12 down. And then JoAnn's has a nice batting that fits that size which I always buy on sale.
I make every hex different. I collect fabrics all the time, cut them into 5" squares, and then trade any leftovers on-line. They have a nice swap here often enough. I also buy pre-cut sets on e-bay. You can get some pretty nice sets if you watch.