Mine are at home and I could expand my pastures, I have ~5-6 acres fenced for 5 horses (2 are mine, 3 belong to my roommate), I own 25 acres. Unfortunately, turning the rest of the field to hay would be a major project - it’s mostly goldenrod and access can be difficult when it’s wet, Ideally, I would put in culverts and a tractor road, but $$$.
That said, the pasture means I use minimal hay ~6 months/year. I have room to store 750-800 bales in my barn and I plan to pack it this summer. If needed there are several hay growers in the area, I’m in a hay growing area, we don’t import it.
For grain, I buy Blue Seal which is made locally, but I could switch to cheaper feeds if necessary or buy bulk oats. For bedding, I buy bulk from a dairy farm that sources it from a local mill, $65 for a pick-up load that lasts 3-6 weeks depending on the weather. I can stock up on the supplements I use and probably will get some of them in the next few months. I have an OTTB that is a moderate keeper and a TWH that is an easy keeper, though retired due to DSLD.
I mostly trail ride now and I haven’t been riding seriously enough to take a lesson or show in several years so that isn’t part of my budgeting. I can get any repairs needed at one of the Amish shops I frequent and they also do building repairs.
Basically, I think I’m in a good spot if things get bad - low COL area with access to the resources I may need. I also have plenty of water and I’m in an area with minimal chance of natural disasters (blizzards and snow don’t count - we generally get warning and can wait it out)