Wow lots of replies overnight!! Thank you all, this was very helpful to read! I'll try and answer some more questions :D
R.E horses being expensive, that's why I got into the whole financial independence, retiring early thing - so I can afford them and spend more time with them. I have thought about ways to make money with them. My parents ran a riding program pre-covid for kids who don't have their own horses, so they pay to ride ours - I think they did make some money with that, but it all went to the pony club and my horses aren't really kid safe anyways (except my childhood pony, but he's retired). I have heard good things about therapy horse programs, and my guys are all really respectful on the ground, so I might try doing that. The other thing I was thinking of was doing lessons, but I have pretty terrible social skills, so maybe not, haha.
I'm definitely not making the retired pony move anywhere, and he's only in his early 20s, so yeah - looking like a decade in the future. No rush!
I was thinking about the heat of SA - dry areas are better for the horse's hooves but I think the trade off of having to worry about heatstroke and bushfires every year would be a pain, so Tasmania or the east coast, around the border to NSW would be better. But probably no point thinking too much now, it'll change a lot anyways.
I am old enough to get a job (and have been for 3 years, whoops) but my school did a thing where they get you a place to work, so I was waiting to do that, then COVID happened so that fell through...I have been applying but I think I'm doing something wrong because I literally have not got a single reply. Not even a rejection?? And every time I follow up I just get told to try next hiring season. Probably not good news if you can't even get a job flipping burgers, lol.
I have started a chicken business though, so hopefully that will get me some cash haha.
Also to Sibley: yes my parents have horses...23 of them. I'm 100% certain they're not going to object to me taking 3 haha. Especially since they hate all of the ones I 'have' (they're kind of assholes) But I get what you're saying and if they DO decide to keep them, that's $15000 less I have to earn every year, I guess haha.
Thanks again for all the replies!! Lots to think about and no problems going off topic ofc, it's all relevant!