Conventional Versus Portfolio Insights

[Dylan Patel]

Hi, 

I would like to use the delayed financing route for investing to speed up the BRRRR process. From my understanding, conventional mortgages that go through Fannie/Freddie utilizing delayed financing have specific terms (all cash upfront to purchase the property...no form of loan to do so or else you can't get the refinance asap and you'd have to wait ~6 months). My question is if I utilize some form of a portfolio loan to refinance, in general, do they care if I used a short term loan to buy the property and then refinance it or would I still need to use all cash?

I'm asking this because I am a new business owner with variable income that won't typically qualify for a traditional mortgage for my refinance. Any help would be greatly appreciated! 

Thank you!