LLC vs. Personal for Fix / Flip and/or Rental

[Jack Taylor]

Hi, I have a self-directed IRA that I plan to use to purchase a fixer upper. I'm debating whether I should sell the house once flipped, or refinance once rehabbed and then rent it out. The question is, I can get a lower rate using my own personal funds rather than a corp, but is that possible and legal to do so? Or do I have to purchase it from my LLC? Legal implications?

I searched for something similar and saw some similar, but not the same, situations in the forums here--which is why I'm posting. Any help is appreciated!