In this case, you can use Rental Income from the units that you will not be living in and that income can count to help you qualify.FHA rates are going to be lower than conventional for you almost always, but FHA does have a 1.75% funding fee. 

You will get a ton more business, and their fees are easy to make up for...

We are considering the following options:-I purchase the property from my aunt – Perhaps we can do seller financing to reduce fees?

For every day after the 30-days, the permit fee is reduced by 10% of the permit fee.  

Yearly bank fees for each, aka choose your bank wisely.

The company is looking at charging %25 which seems like highway robbery.   

It's almost like they tack on a few hundred dollars to the order and forget to charge sales tax

If you are not out by the deadline or the property is damaged, this agreement will be void, and the Landlord will pursue legal means to evict and collect all unpaid rents, plus any other charges owed."

You open yourself to much more risk in not being able to finance out of it and being stuck with hard money and those fees/penalties.

Many months of costly vacancy, local market rent & resale deteriation, special assessments, property taxes and maintanance fees suggest a quick sale would have been the wise thing to do 2 years ago.