Here's a thought:
Having a new horse is awesome... but if getting another horse would put that kind of financial strain on you... wouldn't it be better to wait? I have had my eyes set on an OTTB gelding that is absolutely gorgeous and dirt cheap... but I can barely afford hay for one horse as it is, therefore I've decided it's best to wait until I'm in a better position.
Again, just a thought. Not trying to be patronizing or anything.