They can participate in the same investment, so long as they do not cause prohibited transactions, including enabling transactions.

Enabling or not caring them increases this to increase.

I call cashflow income generated by the asset.You can refinance an amount less than your down payment, equal to your down payment, or more than your down payment...or you can consider your down payment left in the property (the equity created) and the refinance is extracting the value added from rehab (profit). 

Seller agrees to cooperate with the Buyer and/or its assigns in a manner necessary to enable the Buyer to initiate said exchange at no additional cost or liability." 

This enables you to take advantage of 15+ years of experience and a team of experts, without any additional cost to you.You can either try to do everything yourself or work with a team of experts.

People have even been criminally prosecuted for knowingly enabling a dangerous situation.

You'll also want him to sign a deed of trust that puts a lien against the property when recorded, enabling you to foreclose if he doesn't pay you back.

It's simple really.If going to a seminar and paying money will take MOST of your net worth then don't do it.People think these classes are the silver bullet to getting rich.Then they get mad when it doesn't happen and they are almost broke.I would say in that case KEEP YOUR MONEY and do mailers for leads and read FREE material in books and on the internet.Find local investors you can learn from where you want to do business.If you are making money at substantial rates and want to pay for a seminar then it won't be the end of the world for you if it doesn't pan out.It's no secret that many companies will get people at the seminars to "source deals" for them to partner on and use the fees from seminars to buy more properties and get richer.It is NOT for the benefit of those attending the seminar.I do not know this company and I am speaking in generalities.You can find these systems for 30 cents on the dollar usually selling for resale on Craigslist,Ebay,etc.When I bought a broker course on generating listings first getting into real estate the regular price was 997.00.I went in with another broker and bought a used one from the same year on Ebay for 300 so we paid 150 apiece.A year later I resold it once extracting all info for 250 to another broker.So if you are great at and enjoy sourcing information you can do it for cheap or almost free.If you want it in a nice little package you will pay heavily for it.A common tactic of seminars is to throw almost all the "meat" out there and then when you buy the course it just resays about 80 percent of what was already said with a lot of fluff thrown in.

A Solo 401(k) allows for high tax deductions, makes available a range of tax strategies, and enables you to use tax-advantaged retirement funds for RE investment.

Technology advancements such as email, phone calls, skype has enabled communication with a remote CPA to be seamless.