First, you should verify his income supports the rent without her assistance.Second, you should write up a simple "Remove Tenant Addendum" that removes her from the lease, gives him complete control of the lease and responsibility for the rent and condition of the property, and that notifies her she is giving up any rights to the property or the security deposit.

That's the most effective method.

The numbers are fair in my opinion but I would structure it as a secured loan and a joint venture agreement(two separate agreements).

Don't let "accreditation" or the folks selling products "only accredited investors can buy" lull you into a false sense of security. 

You could contribute enough to get the match, let's say 4% from you and your employer (8% total contributions), but your 401k loses 6% one year, resulting in growth of only 2%.During a good year, maybe it grows by 16% (=8% investment gain on your 4% contribution and 4% match).Alternatively, you could keep the entire 401k account in cash (not invested in any securities) and let it grow at the matching rate, guaranteed like a CD.If you forecast out to retirement, based on what you plan to contribute, do you anticipate that your 401k will be your primary source of retirement income? 

What did you do to convince your lender or find the right lender to find a 80/20 refinance for the BRRR method?

Would have capital for rehab cost.Would like to utilize BRRR method once I become more compentent in REI.

If I use IRA money to purchase a home and am using the BRRRR method.

I could see how others like the security of a place to live for a year without fear of getting kicked out.

I particularly enjoy browsing through county records although I'm not sure if it's the most effective method.