FHA loans have exact qualifications and are more often scuttled at closings than other loan products or cash offers.

If they insist simply say they did not meet your qualifications that you set .

There are tons of markets out there that meet your qualifications, but you'll need to start looking outside of your local market.

This is for a handful of reasons, one being because it is good to find out the restrictions and qualifications of the park to help prescreen potential buyers before they go through the home or to the park office.

For qualification they include usually minimum payments on credit cards etc not the principal.If you're really low income, maybe it's better to find a lender who does "stated income" but there need to be proof: bank statement etc.I'd try another loan officer, maybe mortgage broker who would search for different options.Take a look at the topics here: there were explanations how Rental income would count and @Chris Mason even referred the source where to get the info first hand

I imagine finding the range for what the going rent would be is, in theory, easier - but would that information be enough for a lender in terms of qualifying that income against the debt for qualification purposes? 

Do this often and you will  discover the joys of investing and negotiating - and will make a ton of the cash and equity.I should mention when buying and negotiating seller financing - offer a principal mortgage - when doing this, you can offer more for the property since there is NO INTEREST -  an important clause in the mortgage is that it should be fully assumable without qualification and that it is a subordinated mortgage (meaning that you can place the first mortgage on the property, the seller financing becomes a second mportgage and subordinate it to a new first mortgage.)

I’ve recently looked into foreign qualification for LLC to practice our business in another state; would that help us get qualified?

If you made a decision that doesn't match your qualifications, admit your mistake and make a better choice next time. 

The only problem is qualifing for loans since I haven’t started making an income again.