I just used the 5ft tiller with my 2023 to break up brand new ground for a garden. The ground has never been worked before. The tractor is enough for the 5ft, but only barely. On that hard ground, I had to make several passes with the first couple passes just barely low enough to till. There is no way I could just drop the tiller to the skids. I made about 5 passes and once the ground was broken up, I was able to drop the tiller all the way down. I still needed to go in a very slow crawling speed, but that just helped till up the ground even better. I would say that a 5ft tiller will be just fine, but definitely don't go any bigger. My neighbor has an established garden that I will be tilling for him, so I'll let you know how it does on ground that has already been worked. But I think you'll be just fine with the 5ft.