You're here to make money, not give charity and create a head-ache.

-if there was an unexpected expense (such as a car repair or family emergency) that the service member didn't have the cash or credit to pay for, we would arrange for a certain military charity to offer a no-interest loan (or sometimes grant) to get him by for a couple months.  

After 6months of jumping through hoops of securing financing as a self-employed person, searching for the right property, getting the offer accepted, negotiating roof repairs with the seller to meet the FHA guidelines, I finally got it closed.  

If its a 4 month flip and you had cash for it, with only 10k in repairs you would stand to make about 7k. 

If these mechanisms are not in place we seek out an amount from seller to be held post closing for repair or replacement of big ticket items.

You have to have it set up ahead of time at closing so that all of the proceeds sit in the bank account of a qualified intermediary until you close on the new purchase.

My lease states tenant is responsible for pest control and appliance repair .

After all these repairs thinking it could go for 750-800 maybe?

You will need to find a way to negotiate your bills/debt ahead of time, and create a budget to plan every available dollar to go to paying down your debts.

I agree with your question about any building repairs, especially any major ones.