Should we flip it ourselves or sell for cash?

[Brendan August]

My dad owns a home in Pittsburgh that is too big for just him and needs a lot of work (roof, water heater, HVAC). He has spoken with a local investor that wants to purchase the property from him for 100k. My dad owes about 30k on it so he would walk away with about 70k and not have to deal with the stress and hassle of hiring contractors to fix the place up himself.

The homes on the street have been selling for 225k - 245k. The exact home next door just sold for 225k all fixed up (without central air)

I'm trying to convince my dad to fix up the property himself with the help of my uncle and with about 20k that I could invest.

The house needs at least 50-70k to get it retail ready and probably 30-40k to get it rental ready.

Ideally my dad would keep it as a rental property. However he does not have the extra money to cover any additional repairs. Would it make sense for him to take out a HELOC on the home to cover the rest of the renovations and then use the BRRRR strategy (minus the B) to pay off the HELOC, pay me back and use as a down payment on another property?

Or should my dad, my uncle and I work out a partnership to just flip the property and sell it retail. We are having a tough time figuring out the terms of this one though. My dad brings the house and money from the HELOC, my uncle does the work and I bring 20k - not sure how we go about splitting the profits?

Sorry for the long post but any advice would be great - even if it is just to sell it the investor for a 70k profit.

Thanks!