I’d encourage you to consult a tax professional for specific determination and advice.  

over the period of time , we have observed that Individuals or entity get paid finders fee / consulting fee specially on commercial transactions .I would like some feedback.

Ensure thorough due diligence, check the 1st lien status, and consult a real estate attorney to understand the risks before proceeding.

Start small - get yourself a househack, learn from your own experience of owning the rental property you live in, continue to educate yourself with reliable resources, and then worry about the next home.Having just one solid investment will put you ahead of most Americans than trying to find a way to buy 10 doors out of state in an area you don't even understand. 

Although, Buildium is good and affordable, it isn't just as robust compared to AF.I hear negative things about doorloop and don't have any experience with it.I consult my clients in AppFolio and Buildium so it really just the price and how big you want to grow your business.

With that said they are quoting me $250/hour to consult in tax planning services in addition to the tax preparation fees. 

Where can we find reliable source of REI Market trends?

Consulting with an estate attorney who understands real estate investment structures can help ensure that your wishes are carried out efficiently.It sounds like you’re on the right track in terms of growing your portfolio, and refinancing into a DSCR loan under your LLC could be a smart move.

- If I were to buy in Indiana, how should I go about finding a reliable property management agency?

I used to work in consulting for the robotic division at DHL Supply Chain.