Yes you need to be aware of past liens and yes you may be responsible for them. 

In this case, you are paying for the plan documents (the trust), and if you work with a quality firm, some kind of ongoing access to guidance and support so that you can be aware of the IRS rules as they relate to real estate investments.

Hi,I've never calculated vacancy rates other than "back of the envelope" awareness that ours are far better than the 8% I budget.

Looking forward to seeing the pros/cons others have experienced, and some "gotchas" to be aware of.

I am aware of at least one and possibly more persons who would like to sell their home.  

My renter is aware of the deal she's get and is expecting a increase next lease agreement.

Some take what he said and wisely invest whatever they've committed to stocks and bonds in low-cost funds, properly-allocated, while of course being aware of market conditions and not counting on their asset allocations to save them and investing in other assets classes than low-cost index funds, such as real estate, like you are doing.For others, it drives them to a penny-wise, pound-foolish strategy with the entirety of their investment career spent figuring out how to save a few pennies living frugally and making sure their asset allocation is perfect such that they never pursue anything that could make them truly wealthy.  

Many advisors recommend that you include something like a "cooperation clause" so that all parties are aware of the 1031 Exchange and agree to cooperate, and it is probably a good idea to define what everyone means by cooperate. 

Hey everyone, i am aware of how VA loans works but im not sure how it would work on a 4plex.

I am not aware of any free programs that let you know this information.