For example I use RentRedi and offer that as one of the options for my tenants to pay rent.

Specifically flooring and tile options.

There are HELOC and 2nd loan options that might work for this property.

Depending on your new job as a 1099/self employed, there are likely other loan options available that can work.

If its home that went through a remodel, typically there is not any sort of warranty and you will still experience some work orders come in.Either way, great option for some investors and currently there are still some deals out there that you can walk into equity with, which is typically why you'd want a non-turnkey property. builder warranties are for 1 year typically.. 

Have you leveraged lines of credit, private lenders, portfolio loans, or other creative financing options?

If you are looking to pull more cash out I'd go with the second option.

With that being said you do have lots of options.

One option that has worked for us is taking out a loan against your 401K. 

They do offer access to mutual funds, but I do not love this option.