I think it's better to act sooner than take your chances on acting later.
That is what I am thinking as well. The problem is both options have their pros and cons. The cons to adopting him sooner is that it may take me longer to move, because I have some extra costs that take away from saving to move.
Boarding is only $30 per month which includes use of the roundpen, outdoor arena, water, and a 30x30 square for the horse to stay in. It is up to the boarder to build a shelter in that.
I will need to buy hay, which is incredibly overpriced in this town. $300 for a ton of mid-quality grass hay is the best quality and cheapest price I can find.
There is only one vet who is willing to come out here, and that is only on two scheduled days a year. There is only one farrier, and he is an a**hole.
It's part of the reason I sold my old horse. The lack of services made things very difficult. On one occasion, my horse hurt his leg (and thankfully got better without vet help), and the vet would not come out, and he did not accept walk ins. I offered to pay my vet bill, his travel expences, and a hotel for the night for him. Still wouldn't do it.
The other reason was I was the only non-mexican at the stables. Everyone down there is pretty close knit, and don't take well to outsiders. People were throwing rocks at my horse, stealing food from his dish, stealing $1500 worth of stuff from me, etc.
The owner of the foal likes me (though the potential buyer hates me), so we can probably come up with a deal. I was thinking, to anyone who asks, it is his horse, and I am only helping out. I will pay for everything, but that way they don't think the object of their torment has returned.
I'm worried about his safety if I buy him now. If I wait until I leave, I can put him in the horse box and leave with him.