I'm thinking that this would be an excellent place for ground-up self-storage.

On the other hand, if she applies, her credit score is excellent but her income is very little.How does this work?

When I had a pest control expert come out to look under my primary residence, I crawled under there with him to look for fungus/mold, termites/ants, and water issues - I learned more doing that and listening to him than I ever have watching Youtube videos or reading forums.If you have structural specific questions regarding conventional residential framing, wood/masonry/brick/concrete construction, or just general questions regarding the integrity of a property, shoot me a direct message.

A call to a town building department, or an internet search should answer that for you.2) I have found The Journal of Light Construction to be an excellent source of information.

Hopefully you were able to verify the new job is legit as well as excellent previous landlord reference. 

Pulling a HELOC is also an excellent strategy to obtain cash, in fact many investors use this, however, if you do decide to go down this route you need to run your numbers religiously.

Is there any software that makes it nice and pretty rather than just an excel sheet?

All the units need TLC and updates throughout which will bring in excellent tenants and demanding rents.

Write a book or sell videos or even better do seminars and bootcamps.

Have been doing a lot of podcast listening/youtube videos etc.