A very small percentage have been audited, and all of those had no issues with the audit because they were adhering to the IRS rules.These vehicles are a very effective means to take greater control over your tax sheltered retirement savings and diversify your portfolio into stable and income producing assets such as real property, partnerships, private lending and the like.You do need to become educated on the IRS rules, which apply equally to a conventional IRA but you just are not given the flexibility to need to deal with them.  

I don't know of any groups or partnerships in that area, but I would be interested if you found a group over there!

How would you start a partnership for investing in buy and hold BRRRRs.

They'd be foolish not to accept that partnership.

@Phil Rizzo....I recently listened to this podcast on BRRRRRhttps://www.biggerpockets.com/blog/biggerpockets-podcast-237-partnerships-brrrr-investing-working-full-time-ian-reeveswherein, the invester in Kansas City suburbs was buying and rehabbing for $41k and ARV was $70k (about 59% of ARV) so, yes, BRRRR can work in other markets.

I have lot more disposal income to contribute, but also wanna scale quickly. 3) does limiting partnership, but higher individual contributions, makes more sense even though we will have to move more slowly in the beginning?

Create a "personal captive" Qualified Opportunity Fund (needs to be a partnership or corporation -- not a single-member disregarded entity). 

A partnership might work but you need to be able to provide value to whomever is lending you all the money.

We stay away because we would rather bring what we like to eat everywhere we go in thermos bottles and it is like being on a romantic picnic every day vs. sitting and waiting in noisy restaurants.  

@Tom Canterino Partnerships and joint ventures are tricky.