Help with Brrr strategy ?

[Eder Aldana]

I want to start purchasing my 2nd property and I would love to follow the Brrr strategy , My question is what is a better financing for the Brrr strategy ? To use seller finance to purchase a property and use my own money to repair it( i would have to purchase something that does not need more then 10k of work) Or use a heard money loan to buy the house cash and also repair it and then do the refi to pay the loan back ? Any info will help thank you!