Might be wise to diversify by buying a property and also put some percentage into syndication deals. 

Spell out as much as possible in the agreement such as percentages of ownership, how profits and expenses will be handled/distributed, responsibilities of the parties, what happens if one partner wants out or passes away. 

When thinking about vacancy, concessions, loss to lease, bad debt:1) When initially underwriting deals before going through due diligence, what percentage of gross potential rent do you factor in for concessions, loss to lease, bad debt to be conservative?

I have some capital I can invest, and was thinking could I exchange this for a mentorship and make a percentage at the same time?

However I do not care for cash flow or even principal really, as it is very small amounts whilst I make 50%-100%+ returns in everything I do, and I will be able to safely hold the property all the same regardless so there is no reason for it especially when it takes away from actual important ROI numbers that are as you can see unimaginable, and they ARE conservative for what this method is regardless of the ludicrous percentage.

But I have only partnered with one very close friend before (and on a small scale) and am looking for larger investors.Considering the returns are small (yet stable) I  am unsure what percentages my company should receive .I am starting with the idea that each investment should yield my company 2% ownership of attained asset and receive a 3% management fee based on gross income after property tax.the scenario I see would look like this

Especially for low value properties <$80k, the percentage of error you can expect is high. 

This will give you the ability to get out of the gate (graduation) in the best financial position.In terms of how much money you should save up, if I were you, I would take a look at the local real estate inventory that you are interested in and save a percentage of that.

That definitely makes sense to run your numbers based on the fair market value and what percentage of a bank would give you.

You can structure it where they loan 100% of the funds and get either a fixed interest rate or a percentage of the profits paid when the property sells or refi if its a Brrr.If you take them on as a JV partner and they are totally passive that's actually a security and crosses the line.