Curious to hear the system you'd recommend for tracking material participation?    

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

Also, we have a team of fifteen employees now, with processes and systems to scale.Given my track record and ambitious goals, I'm exploring ways to attract investors for fix-and-flip projects and rental property investments.

Once you have the LLC and IRS Employer Identification Number you can open a business bank account to track rental income and expenses. 

All you need is a single place to track tenant information, payment history, maintenance, and a few other things.

I want to track exactly what you do as a service for my investor clients, but not get into property managment. 

I have kept track of all my expenses in an excel sheet/word document but feel like there may be a more organized and efficient method to tracking?

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

To keep everything organized, I swear by Asana for task management; it keeps me on track.

You need to demonstrate you are worth the risk.If I were to invest in someone else's deal, I would want to see their track record.