How ot best navigate a 1033 Exchange

[David Starr]

Property was a (1) small mobile home park...land and trailers, (1) house and (1) mobile or RV ready rental  lot.  Of course I would like to keep some of the proceeds but...looks like I need to reinvest the full amount paid for the properties in to "like" property.  I think I understand that all of the funds do not have to go into a single investment...but I am not 100% sure of that.

Thoughts please as to what kind of legal structure would work best for estate planning purposes, cash flow, etc.?