Current IRA to Self Directed IRA conversion?

[Drake Espenlaub]

I currently have an IRA with the company I am employed with through fidelity, invested in the company stock. I have been using a loan strategy on it to purchase and rehab my properties. Is it possible to switch the rest of the funds into a self directed IRA as I can only access half at a time. As far as closing the account, it is not possible until I leave the company. Part 2, is there any tax advantage for me doing self directed as opposed to just continue to do the loan program they offer.