However, seeing as though I have already sourced the deal myself, would it still be in my best interest to use a realtor for this transaction if it works out? 

There are plenty of entry roles from cold calling, scrubbing data and find deals for investors, leasing assistant, work on construction sites, office admin, project coordinator, Title assistant, RE photographer, transaction coordinator.. on and on. 

There are far too many regulations, the transaction is a much longer process, and we are talking about someone's biggest purchase.

What is your source for 99% of transactions are above 2%?

: A 1031 Exchange can defer a significant amount of capital gains tax, so it’s often worth it for high-value transactions.

This would be a prohibited transaction since you're a disqualified party and anything you already own (your LLCs) is part of that. 

Please share any helpful resources, your personal experiences, and what you have found to be valuable with every transaction.

@Amol KulkarniRecommend exploring as many sources as possible to get referrals AND cross-reference them to get as much accurate information as possible.Check out NARPM.com, BP’s Property Manager Finder (BiggerPockets: The Real Estate Investing Social Network), etc.Also, encourage you to learn from the mistakes of others - by reading posts here on BiggerPockets about owners not having their expectations met by their current Property Management Company.

On the other hand, pros include increased cash flow, engineer-based data for the clients CPA, audit protection (with the right firm) and the ability to deflect that recapture fee with a 1031 transaction.

I do not have experience in commercial real estate transactions.