Over time I want to build a diversified portfolio of assets to generate a steady flow of part-time passive income and maybe even achieve financial independence!

Our long term goal has been to own several rental properties generating a reasonable cash flow.  

I generate my own leads and talk to sellers directly to negotiate my own purchases so deals that ai pass up on or don't need to buy right now, I simply assign to other investors.

Both approach that is 3.5% and 20% downpayment has its advantages and disadvantages but if you ask me i would advice you to go for 20% downpayment if you have enough fund to finance the mortgage because the essence of having a successful real estate investing is to earn more, gain financial stability and build wealth through generation of consistent  positive cashflow and equity.

Not everyone has this problem...I have a massive and very strong buyers list, including real pro investors and developers looking for deals in NYCbut i need more properties in order to find for everyone exactly what they need,so two questions: (1) how to i generate a bigger flow of deals ?

Not trying to force anything but rather point you in the right direction to save you a lot of headache and money to accelerate you on your wealth generating path to success.

Two teens will generate more visitors then some people are comfortable with, they don't have to be doing anything wrong.  

He's an active investor in Jersey with great insights on seller lead generation.

I would like to repurpose the property away from lodging operations which is not a consistent revenue generating proposition and into a long term land-lease agreement from any industry sector company who will use the building/land to fit their needs?  

When you engage in an active business such as wholesaling you will generate income that is considered to be unrelated business to your IRA and income from such activity is subject to UBIT, which tops at 39%.