I invested in a syndication, but it was with an investor that had a long track record.

To everyone on the wholesaling forums, understand this:Focus on learning from those with real experience and a proven track record of success.Don’t waste your energy on negativity.

To add-on to what @Russell Brazil detailed, there is some important life changes that can fast-track things. 

It looks like you're on the right track with your math, but a couple things could help.

2) Time spent by others: to qualify for the test "100 hours and nobody spent more time", how do we track the time spent by others and what proof would be required in the event of an audit?

You only need a place to track tenant information, payment history, maintenance, etc.

Life has thrown you some curveballs, but you’re already on the right track by focusing on learning and planning.

You only need a place to track tenant information, payment history, maintenance, etc.

Notice that I'm not saying "Sponsor who makes me money" or "Sponsor with great track record".

I really can't say what my average return was because over the decades I didn't keep track, it's not a relevant measurement.