Most of the people think that you need to have everything paid by LLC to get the deduction.

In addition to capital gains, you will have to recapture all depreciation: you first take deductions for depreciation but then ultimately you return these tax savings at sale.

Set some tenant screening standards and follow them. 

The person renting that space from you wouldn't have a standard apartment lease, you'd want to create a sublet agreement that explains how utilities are split etc.

2.)Dontate to a chairty real estate with causes and somehow get a deduction that way not sure how it works out?

Standard offer How did you finance this deal?

Also, you can look at commercial financing rather than standard financing for mortgages.

At least all the heloc's I have seen had this language.. does not mean you could not negotiate it out of the note.. but I would think that would be pretty tough to do as its buried in their boiler plate.this really came to roost for us in the GFC were I had large 5 million dollar plus Lines of Credit that were all on 1 year revolvers. which is standard for those types of facilities.. we used the money to buy foreclosures and flip them. 

Since the Series LLC is an LLC, its first going to be attacked by piercing the veil like a standard LLC.

I am not an agent nor a wholesaler but I have researched enough to know that it varies a lot state to state and you most likely want to consult a real estate attorney in your state prior to doing so.As far as I know, it is completely possible to wholesale as an agent, but they are held to a higher standard and as you alluded to as require certain disclosures such as the fact that you are an agent.