Know-How Exchange : Strategy

Hey there dear collegues, recently I've been working with a land fund which is searching for high net worth individuals and places where we can expose ourselves to the accredited investors mainly in the US, but also considering foreign guys since there is an EB 5 benefit for them.
I came up with 2 main ways to do it:
1. Investors clubs and associations.
2. Email marketing through our database of company owners.

Does anybody have an experience in this niche or maybe works in it right now, please share what you can share, your experience, whether its good or bad, and what other tools or approaches i should try to reach the goal.
Thank you very much in advance and looking forward to your responses!
P.S. I've been working as a marketer for over 2 years, my niche was flower delivery in Dubai B2C and B2B, i was head of marketing there, so if anybody wants to ask something I will be glad to help.