I ether get kiln dried hickory or pecan already split or rent a log splitter for $100 per weekend when cleaning up oak around the farm. Splitting mauls and axes work fine to get wood to size for the RF offset, but I'll also use a power mitre saw to cut splits down smaller for the vertical woodburner, Weber or mini-wsm. This works great on smaller splits:
I buy it already split in 24" lengths. I use my bandsaw to cut it in half or thirds if it is a thick split. I can cut enough wood for several cooks in a few minutes.