From the size of log busting I would skip the slow action hydraulic or electric splitter and since you mentioned a Ford 9N, you might consider a 3 point hitch mount corkscrew type. Something like this:
Fast, easy to store away, no extra service with motor's, hydraulics, etc. Tractor runs just above idle speed and 540rpm. There are similar types with small gas engine but have yet to see an electric version. I've used all types of splitters and various sizes but for what I'm viewing in the pictures, the corkscrew would be my top choice. Have fun and play safe.
BTW- These 3 pt. splitters some years back were running $375. Well worth it.