Hi Jereme. That's unfortunate that the horse was SOLD. I hate getting disappointed. On the up-side, everything happens for a reason, and you guys will find the right horse that is meant to be.
You guys sound like you've done your research! Very impressed. I think ya'll will be perfect draft owners from what I see.
I have a young Clydesdale that was in pasture with cows. Same thing: no formal training, no feet training, especially.
I think you guys will be really happy with your decision once you get into training. My Clydesdale un unbelievably easy to train.... VERY smart, and I can't get her to spook, no matter what I put in front of her. I'm pastured with 3 other drafts, and the same can be said for them.
Now, I didn't have grass where I lived, so I couldn't wean her from pasture. Getting a nice grass hay... no alfalfa for now... will do just fine. I eventually started feeding her alfalfa/grass mix, but that has to be done over time. My girl was under weight, so I gave her a constant supply of grass hay.
After she settled into her new home, I slowly introduced feed. Don't feed drafts grain. LMF has a great no-grain feed... perfect for drafts. It is a Low-carb feed. Most feed stores carry it. My clyde looks great on it. Here is a link: LMF LOW NON-STRUCTURAL CARBOHYDRATE STAGE 1 :: LMF Feeds - LMF Horse Feeds - the finest feeds for your horses health
On top of that, I give her sand-clear. Actually, I use a cheaper generic brand called SandRid. Her weight really started improving because of that. I'm sure ya'll know about that stuff. Drafts do well with higher fat diets, so add a couple cups of canola or vegetable oil to his/her hay every day.
Minerals: good 'ol Salt block. I've always felt better about buying the red mineral block, but all the horses in my pasture will only touch the white salt blocks. Lol
Suppliments. I don't much agree with suppliments unless you come across a specific problem. Then, it can be addressed with the right knowledge.
For my girls feet? Finding a farrier to do them CAN be a task, but I've had no problem. They're many farriers in my area. HOWEVER, that is her one major fault. The farrier gave up the first time I tried getting her trimmed. Their feet are huge, heavy, and powerful. They're dangerous. Start off with lifting the feet with ropes. It's taken us several weeks, but I'm finally picking her front feet with a hoof pick. Still no farrier, though.
Let us know how things go!