Sorry to hear about your asthma. I come from a family of severe asthmatics and suffer a bit from it too. Having asthma can lead to shallow breathing which leads to anxiety and depression problems.

It sounds like you are not emotionally up to having your dad visit. If you can email your brother then you can also email you dad. I suggest you email him with an excuse and cancel the pre-Thanksgiving deer hunt.

Sounds like you need a plan with maintaining the house. My mother suffers from depression and crazy expectations and her house is always a disaster. Most importantly, though, a cluttered house is full of dust and that is very bad for asthmatics. You will feel better physically (and emotionally too) if you have a clean home. I apologize if this suggestion comes across as a lecture - it's not meant in that fashion. I wish you all the best!