Loader work will include moving gravel around, grading driveways, and mucking out sheds. We do have some fairly steep hills, so I think 4WD is a must. I'm worried about stability mowing on the hillsides, but I do have the option of using an ATV with a pull behind mower if it gets too scary with the tractor.
How large a tractor is needed to lift a 1000 lb round bale with a loader?
I own a Kubota L3240 w/a 724 loader. It is the smallest in that grand L series line. I can move 1000lbs bales. My loader is listed as being able to lift 1865lbs at the pivot pins and 1415lbs at 500mm forward. Others may feel differently, but I would think what I have would be a minimum. If you mow heavy stuff my 26.5 PTO HP would be pushing it. I have no problem with using my 6ft bush hog mower, but I only mow grass. I would suggest more HP. Kubota's L3940 @ 33PTO HP, or a L4240 @36.5 PTO HP would be better. Or go to a 5ft mower.
As I said these are minimum sizes. You can go up. The M series are wider and heavier which would be more stable. As another poster pointed out, you can move bales with a 3pt hitch and get away with a smaller tractor.
How thick is your wallet? Within the same quality, bigger cost more. Smaller costs less, and sometimes fits in sheds easier.
I'm not pushing Kubota, I don't own any of their stock. I am just somewhat familiar with their tractors.
If you can afford it, think about a utility size rather than a compact utility.
There are lots of brands, built in different countries, even within the same brand. JD has some built in Japan an some in India, as do other brands. Build location matters to some people, and not to others. If that's important to you, ask the dealer.
Some things are personal, a friend of mine hates orange. Not the tractors, just the mfg. color choice. Some machines are louder than others, or the operators area is small. You need to get some hands on, to see what you can accept.
Have fun looking, Bill