That’s a lot of hand splitting. Yours is a lot neater than mine.
I like to way that rack works. Latterly I’ve not used my saw horses much, I’ve stacked the logs as you have in a lattice and just cut them up there a layer at a time. It saves handling.
I try to keep the longer lengths to build the outer ring. I think they are easier to build with and they bind with the next inner ring a little better. I bury the uglies in the middle.
Its important to try and build the middle at the same rate as the outer. It binds it all together. I needed a second pair of hands to pass the logs in to me to build the middle once I’d built the outer.
Mine is eight feet in diameter. I think the bigger circle makes it easier as the logs have more room to point into the centre. The smaller circle means you need to split the logs a little more. It does however mean you need a lot more wood.
Keep an eye on the pitch of the outer ring. As each log dries it contracts. If they slope outwards too much too early it will burst outwards. If they slope inwards it can only implode against the the mass doing the same from the other side.
Keep the pictures coming.