We are steadily coming up with various design plans to modernize the space and make it more functional but given that the existing structure is so "different" I was wondering if you guys ever call in structural engineers for some of the larger scale rehabs?

I'm thinking of combining the cash you have + seller financing + bank loan.If you tell me what you have, I can help you figure out the numbers and all that.Best regards,Kevin 

A cheap prepaid phone or the modern definition: software that let's you create another phone number for your phone.

The home is move in ready, secluded on 2 acres, and has a very open and modern concept ideal for a family and hosting and entertaining.

Sounds cheap until you realize way back then door frames were much taller than modern homes, and the walls were crooked.

The combination of strategies and systems implemented by a well-trained team under a great leader could lead to a massive competitive advantage just like what you've achieved. 

I've been declined at 2 small bank for a combination of being new to bank, inexperienced and credit score.

And you can combine it with sec. 1031 to turn some of the tax-deferred gain on investment property into tax free primary residence gain.  

I've found some lenders who work with rental properties based only on the income of the property, not the borrower's debt-to-income ratio, but they basically do blanket loans for multiple properties and their minimum value is higher than the combined value of these properties.So on the one hand, I can't get a regular bank loan because I'm self-employed, and on the other hand, I can't get a blanket loan for investors because the property values are not high enough.

If I had to speculate I would assume it probably has to do with a combination of being more stringent on the rental cap due to FHA guidelines and their requirements, along with wanting to preserve the building's atmosphere of being a condominium not a hotel.