Would you rather invest $10k into an IRA and add $100 (-$100 expense)  into it each month where you'd have around $128k in 30 years (assuming a rate of 5%).

He suggested that we take 500k in IRA money and roll it into a Roth IRA funded by notes (from his company).

If we both lose our jobs, then I guess we can borrow from our IRA...Hau, just an FYI: you can't borrow from an IRA, it does not offer such option.

Downsides of lending side is that its taxed as income not capital gains (not an issue in an IRA).

Go to people like Dmitry ,IRA Financial Group, George Blower and his firm , or Justin Wyndham and his firm to get the plan set up.

Currently have a SIMPLE IRA with 100K to invest in flips/rentals.

Hello Hello Successful People of Bigger Pockets,So, I have heard of being able to move monies that are in Retirement Accounts/Roth IRAs in to Self-Directed accounts in order to use those said monies to invest in real-estate without penalty.

I also utilized borrowing from Roth IRA (contributions only, not earnings) and general frugality (we are renting two rooms out of our house in an attempt at "house hacking") to save additional capital to invest.

Looks up using a self-directed IRA, or sometimes called checkbook IRA. 

The advantages of having a Solo401k with a Roth account vs a Roth IRA is that with a Solo401k you can leverage real estate investments with no UBTI tax.