Just because I’m 30 years old, doesn’t mean I get to do whatever

perspective.
I've been offered an opportunity to work at a ranch in South Dakota. The pay is good, housing and meals are included, and it would give me experience in an industry I've wanted to work in for a long time.
I've interviewed with them, spent time looking into the operation, and came away with a good feeling about it. They seemed to like me, and I liked them as well.
I'm 29 years old and have been driving for about three years. The drive would be roughly 20–24 hours total depending on the route, but I would spread it out over about four days rather than trying to do it all at once.
What has me confused is that when I first brought up the opportunity, my mom seemed interested and supportive. Now her main concern is that it's simply too far away. What's making it harder for me to understand is that she was previously okay with me going to Maine and New Hampshire, and she also let me go to Ocala, Florida, so I'm struggling to understand why South Dakota feels different.
I'm having trouble figuring out whether I'm being unrealistic or whether this is actually a pretty normal opportunity that many people would consider.
For those of you who have traveled for work, moved away from home, worked on ranches, or taken seasonal jobs:
Does this sound like a reasonable opportunity?

Is a trip of this distance unusual for someone in my situation?

What questions would you ask before making a final decision?

I'm genuinely looking for honest feedback. Am I crazy for wanting to do this, or does this sound like a normal opportunity worth considering?