Wow - that is some post! I won't go into the fact that your message is unreadable as that's stating the obvious. But I would advise that if you want help, be succinct. Nobody wants to read a 3-page stream-of consciousness with no structure.
Like Jon, I got through part of your post and I think that's all I needed to see. His advice as always is spot on - state the simple facts and you will easily get an eviction. 95% of what you wrote is immaterial. Just present to the judge the lease, all payments received, and let that do the talking. Bedbugs, a/c units, etc are not relevant. Don't create drama - which is really what you've done with this post - but just stick to why you want to evict. I might suggest that you have an attorney represent you since they will be well versed in how to act in court. Based on your post, I'm afraid you might ramble and take the focus away from the pertinent facts.
A few thoughts:
1. Unless you change your mindset, you are not cut out to be a landlord. You have been letting your tenant take advantage of you for almost a year now! They should have been evicted 9 months ago. To be blunt, you're not a bad landlord because you neglected to take care of the property or were unresponsive (which seems to be your concern), you're a bad landlord because you let tenants walk all over you.
2. Not only should you be filing for eviction, you should be filing to get a judgment as well. The tenants owe you an amount of money and you can garnish their wages to get that money. I won't go into collectability here as I have yet to collect on any of my judgments but nevertheless, you should do this to show them that you also know the rules and that you mean business.
3. Now this may be reading into your post too much but based on the vivid detail you provided, you are way too emotionally invested. Take a step back and remember that this is a business venture and a business relationship. Deal with each issue independently as it arises and move on. Don't let things build up and make each issue dependent on another. Your ability to make a repair should not be based on the timeliness of a rent payment or the nature of the last conversation you had with your tenant. Fix what *needs* to be fixed, when it needs to be fixed. Ignore the fluff. For example, my tenant would never get a new door.
4. Personally, I'm not a fan of buying/owning rental property without a nice rainy day fund to help take care of repairs, evictions, vacancies, etc. It sounds like you might not have the financial resources to handle the ups and downs of owning a rental property. Only you can judge if you're positioned financially to weather unexpected expenses.
5. If rent on this unit is barely paying the mortgage, it's a losing investment and you should sell it anyway.
I hope I wasn't too harsh. I've been in your shoes too - to an extent. I've let people stay too long, or at I've given incompetent property managers too much autonomy. After a couple evictions, I don't do that anymore. Rent is late on the 5th and notice is posted on the 6th to start the eviction proceeding. No excuses - I don't care about your disability, pregnancy, or any other issue. If your unit requires maintenance, I have that taken care of immediately and it has no connection to you needing to pay rent on time.
Good luck.