Off-market property is the best option for fix and flip, but since you are planning to live and flip, some on-market properties would also work.

Properties are not like stocks where After IPO the market cap is so large that that most of the life changing appreciation is gone. 

@Gary Abrams A cloud based solution would work really well in your scenario of having other family logging in and helping with management. 

Love the strategy of doing the work that so few others are willing to do.

Zero help getting that balance back.

If it does go to probate, hopefully your brothers and you can amicably go the informal route vs formal (I've worked with families in both when buying properties out of probate and informal is FAR easier).Since there's no debt on the house, maybe you could sell with financing or maybe you could even buy out your brothers with financing -- that way you maintain ownership and just pay them a monthly amount.

I would vet contractors by finding local real estate agents that also work with investors, and/or a rehab investor in your area that does a lot of deals.

I briefly worked in commercial lending after I finished grad school and that really opened my eyes to the inner working of that industry.

The market will naturally balance itself. 

Has anyone worked with Mario Cotto and his team.