Our listings appear across so many platforms I would not know which site they stole them from. 

I have a few e-mail addresses of new Aussie friends and gave the BP site to many.

I agree with @Jonathan Greene that the question is vague, so my advice will have to be as well.The short answer: MTRs are real estate, so just like all real estate, any place that can long-term-rent cash flow with increasing jobs/population can be a suitable site to purchase. 

Many sellers will not accept this since they are in second position, and it is very risky since if you default (higher probability for investors with no money and/or no skin in the game), they will most likely be wiped out during a foreclosure.

Unfortunately most lack the balance sheet to obtain favorable financing, can't afford to put any skin in the game and fail to make a compelling reason for why the investment makes sense or to justify the structure they are seeking.

Quote from @Chris Seveney: @Francisco AvancenaThere are specific lenders who will do land dealsBut of course not as many as traditional real estate.The key will be skin in the game - typically for land because it is less liquid than a home the lender will want to have a lower ltv on the deal I fund land flippers currently in  CO FLA WA ID MT NV AZ OR TX SC GA VA  one thing about land though LTV is lower and RATES are NOT the same as typical HML rates are higher for raw land but its a specialty niche and a business that I grew up in..

Do I need to talk to a real estate lawyer for my own lease, or do I use a site like RocketLawyer?

I have been playing the multifamily game for almost 10 years now, and the GRM is one of my least favorite methods personally since it ignores so many important factors (steam boiler versus electric baseboard heat as an example). 

its funny how this changes with time and the market on BP  if you asked this question 5 to 7 years ago you get drowned out with the cash flow is the ONLY thing and appreciation is for gamblers my self I have always been about making appreciation games in RE.. by either value add building a new product or buying foreclosure and flipping or lending money and getting instant 12% plus returns . 

You’re already ahead of the game—stick with Central Florida, and you’ll crush it!