It's the same 75% of the rental income towards qualification.  

Both VA & FHA only count 75% of the projected rental income from the unit(s) you aren't occupying towards your DTI qualification.  

As for proof of pre-qualification?

@Lamont B. any credible HML should be able to provide you with a loan pre-qualification letter to submit with your offer, which is what any other conventional lender would provide to an owner occupant/retail buyer.

Yes, that really did happen.So if you have too many deadbeats, maybe you should re-examine your qualification standards and screen your tenants better. 

In order to avoid discrimination you should have a set of minimum qualification standards for all applicants.

Rates and terms will vary greatly, but general banking qualifications will still apply.

Since I am new at this, I do not know the legality or technical qualifications for gifts on FHA loans.Is the above mentioned scenario feasible?

But here's what I had to say minus the link.It's the FHA 203(h) program, The pro's are definitely the 0 down, and that the qualification guidelines are more relaxed.

This would be called a foreign LLC qualification.