The materials were exactly the same and didn't account for updated medical laws, so the information was outdated. 

I’m a 27 year old medical device sales rep who wants to build passive income and quick the 9-5 grind asap lol.

But truly self-directed Solo 401k is exempt from such tax on leveraged real estate.

I really need the funds though, I'm living on SSI, wife is fighting breast cancer, medical bills soaring!!

If you've lived there 2 out of the past 5 years then you are tax exempt on the first $250k of equity gain if you're single or $500k if you're married. 

There are only three exceptions outlined in the law:A. to any person with that person’s prior express invitation or permissionB. to any person with whom the caller has an established business relationshipC. by a tax exempt nonprofit organization.Here is the full text of the law. 

I market my short term to professional travelers, mainly in the medical field.

For about $75 you can purchase additional O&E insurance that covers additional exemptions - including the first 4 items in Schedule B part 2 which are the ones you are most concerned about. 

The house is in a neighborhood where medical, nursing, pharmacy students rent.

Gym membership dues may be qualify as medical expenses in very limited fact patterns or may be a deductible business expense if ordinary and necessary (i.e. a professional body builder or athlete).