Selling as yourself and buying as that multi-member LLC is changing taxpayers.If you wanted to purchase as a single member LLC that elects to be taxed as a sole proprietor. 

The management of the park will be handled by the property management division of Adam Campo Real Estate {Limited liability company established in 2006/Managing countless properties professionally (as a sole proprietor) since 1999}, and we will be employing a full time on-site manager.

If the LLC you set up was taxed as a sole proprietor then it would not file a tax return. 

So you are a sole proprietor and for tax purposes you will file as such.

I'm a sole proprietor and am exploring ways to diversify some of my existing retirement funds.

It seems like if the owner operated as a sole proprietor having his or her assets locked, or personal cash flow locked would be a most likely scenario- for at least 90 days, possibly more???

(piercing the veil, sole proprietor dba)There were major issues in his JV agreement that my attorney surfaced as well, but he dismissed them saying nobody else had an issue with it. 

Now mind you, depending on what type of consulting you are in, your exposure to liability from that business activity may be very limited, thus, a sole proprietor may be fine.3rd issue, where would the rents to your property be deposited to?

Would you recommend someone starting their RE journey who wants to primarily do buy and hold, Brrrr, and flipping (secondary) to apply for a sole proprietor or start an LLC from the start?

If you create a single member LLC  that chooses to be taxed as a sole proprietor it will not file its own tax return.