I had thought that I could just take care of everything that looked sketchy in the renovation loan, but something can always crop up, and I wasn't sure if the 20% down on Homestyle was with or without the renovations.I can get roughly $19k as a 401k loan, but I'm very hesitant to do that due to the inflexible repayment terms and lack of early repayment option.

It is not a inflexible document.

If we did sell, we would look to reinvest down the line, after paying some bills and keeping some in flexible savings. it’s very tempting with the market to cut and run and be able to pay some debt as well as a cushion to reinvest. 

And while it comes with pros of working on your terms, it comes with the cons of inflexibility of moving, just like any small business.  

Move in date in flexible.

Sometimes you have to be flexible on the tactics and inflexible on the goal.

They have strict guidelines and are very inflexible.

I ultimately decided to withdraw all my retirement account money when I left my employer.I liked the flexibility of being able to invest in what I want to invest in and do what I please with the income.I think a retirement account(401k or IRA) is good for those who feel like they won't manage their finances properly.I just see it that I am taking it from one retirement account(401K or IRA(inflexible)) to another retirement account(real estate).There are pros/cons of taking money out from a retirement account as it may be deemed a taxable event.

They seem potentially expensive, confusing, inflexible and...maybe lucrative?

Any other bill, companies will work with you, electricity, water, cable etc... but landlords largely remain inflexible.