Is there anything I can do to ideally get them to not list the house and sell to me, I’m assuming there might not be many options, especially since the sister and I had agreed on a price that was below market value given I was planning to invest money to remodel the home and was planning to honor his wishes of not having the home knocked down to make a townhome or new home.

Any other options?

Are there more affordable options that are also good?

It's worth reaching out to multiple insurers to see what options are available.

You can grow much faster using the power of leverage.

Getting recommendations from some in-person or virtual groups seems like a great place to start compiling a list of options. 

Another option is to have the building tested, and if that is found you could get a quote for remediation.

The type of property you choose—whether it's a project you can rehab or a ready-to-move-in option—will also influence the type of financing you'll need.

Slim I'm sure.So I'd take the other option.

Ideally, you work on a smaller project first, but if that is not an option go to an existing job and talk to those existing clients.BE VERY PARTICULAR AND NOSEY