or any other idea how should I invest do not having to wait for years to gain credibility, without using  hard money lenders

LLC's are governed by the State they are in (mine does), and protections are afforded by that State. 

If you are still working for the federal  government,  are under 59 1/2 , and contributing to the TSP this could be considered a withdrawal which would be taxable and incur early withdrawal penalties. 

There will be some digital marketing involved to bring traffic to a website designed to capture the leads.I know there are regulations governing marketing for investment opportunities, but this seems like a little bit of a grey area.

Just because the government will allow you to speculate with sharks because you have enough money doesn't mean the "accredited" investors have a clue what they are doing or getting into.Accredited Investors are some of the most sought after "fish" for a reason, and end up being the poster boys for the saying "a fool and his money are soon parted".The OP needs to learn to be a sophisticated investor, not just an accredited one. 

In almost all areas code violations are issued at the city government level.

People are GONNA look you up, see if your credible or not.

Now if the house is for you, you can do a first time mortgage with as little as 5% down and take advantage of the new Canadian government incentive (assuming you qualify). 

If it’s a solid project and you a credible sponsor it should be fairly straight forward.

In my area short term rental requires a license granted by the local government, these license are limited and expensive.