So, there's more than one way to create more cash flow than refinancing:-). 

As the cash flow is obviously much worse than you can earn in the bank with a basic CD.

If I have a capital provider whom wants to be 100% passive and is ready to invest $100k with me (cash), and I have all the syndication structure and offering documents for this project... can’t I just find an accredited investor, present them the deal / get them on board, and go through them?

Since you want to aggressively invest in the near future, you will need cash and the 30 year option is the right one for you.

Are you looking to sell some/all of your portfolio by minimizing your tax exposure and be more "maintenance free"? 

Start with BiggerPockets Ultimate Beginners Guide (free).

For example, you could create a weighted structure where a percentage of profits is based on cash contributions, and another portion compensates for rehab or management efforts.Rent Payments and Tax-Free Profits:If you structure it as an owner-occupied property, the rent you pay could be shared proportionally, but tax-free gains on resale may only apply to your share, as you’d be the owner-occupant.

My next question is what kind of cash do you have available? 

And of course, if your actual cash value is less than the current mortgage(s) on the property, all of the cash value payment will go to the lenders. 

You're never going to be 3% financing and if it cash flows, I would lean toward keeping it.