SDIRA questions for a newbie.

[Clay Sellers]

I have some money sitting in a 401k account from a job I left about a year ago, not much, about $20K. 

I can roll that over to an SDIRA, correct?

Does it matter what strategy you use (Fix & Flip, Buy & Hold, BRRRR, etc) within an SDIRA?

Since it's not a large amount of money, can I use it for a down payment and take a mortgage loan, within the SDIRA? 

Can the SDIRA get an HML or PML for rehab costs?