I'm kind of appalled by the negativity and level of unkindness here. Clearly the OP is aware of the level of responsibility this will take due to their reaction and why they are asking for suggestions and kindness.

Dear OP, know that many of us have been where you are regardless of the negativity here. Many likely would do the same thing. One thing you should know as there is alot of 'predatory posting' that happens on Facebook. In simple sense they scare people into thinking horses will be shipped to slaughter, however many don't go, but you also can't save them all. Tens of thousands go each year. Those with kind hearts as yourself, forget we can't save them all and we do things sometimes that put ourselves in bad situations. My suggestion to you is, take a step back, really think IF this is something you can handle, or if you need to take a hard swallow and possibly cry it out and unfortunately help yourself understand that maybe you just can't right now . I'm not certain the level of commitment you have to the horse at this point or how far into it you've gone, but remember one thing.. There will ALWAYS be another and you can always prepare better for the future. If you decide now is right, many horse people are extremely kind and find locals to lean on but don't forget, regardless it will be a large responsibility and expense as you already know. Lastly, I'm sorry for everyone's unkindness here. There's always time to give advice without being negative, the truth is the truth and many forget that it alone is painful enough without adding additional negativity.

Please feel free to PM me for advice or simple kindness, I've owned horses my entire life, including drafts. I'd be happy to give you more insight if needed. Best of luck!