Agree that bigger, with an edge if possible. I would LOVE to be able to drag my ring and get under the ground marking edge poles --true --I can move them, but even when I do, because my large ring is exactly 66.6 by 132.6 my edge is grass with no footing. I am sure that over the years (I think I’ve had it for 30+ years, the footing along the edges has become “different” than what’s in the middle --more packed. I only work my ring to a depth of 4" --unless I have a bad spot, then I might go deeper. And controlling the edge grass --it’s always trying to migrate into the ring --the kids who work for me sometimes have to take shovels and dig it back.
But regardless of what you decide, you will find that every ring has its flaws --I agonized that my ring has a “clay spot” that’s different in one corner and a wet spot that always seems to have a puddle after the rain. But travelling with kiddos around the East Coast to 3-Day shows --we found that all dressage rings have imperfections --except maybe Lamplight in Chicago --perfect! Some of the most prestigious shows just roped and mowed a flat place for dressage –
Anyway --enjoy your ring. I’m waiting for mine to thaw.