To understand where the flexibility is in the project.

I'm pretty flexible with what flooring goes down - Carpet, sticky tile, painted concrete, etc.

Others are more flexible.  

Investing in real estate with after-tax dollars provides flexibility, leveraging, and tax benefits like depreciation, but involves an upfront tax hit if cashing out a 401(k).

Many of the BP podcasts are from a pretty young perspective, both in terms of flexibility and maybe even priorities.  

A simple check-in during their stay shows you care without being intrusive.Implement Self Check-In: Guests appreciate flexibility.

Selling seems like the clearest path to maximize profit and flexibility—especially with $100k equity to work with.

For financing, you might look into portfolio lenders or commercial lenders in the area who could be flexible with mixed-use or multi-property deals.

However, if you can STR the home at a higher profit, or LTR it at a lower profit then you've got the makings of flexibility :) 

It's a flexible approach, suitable for both single-family homes and multi-unit properties, and can be tailored to fit your lifestyle and financial goals.It's important to research local housing laws and market conditions to ensure a successful house hacking venture.