I did due diligence through unconventional methods and for the amount of money I was willing to take the risk.

Could swallow some pride and use the cash for keys method.

(Two tenants, bounced checks twice - ugh) I use the method of each tenant gets an invoice created each month, then I accept the payments, create a deposit and record it, and take it to the bank.After a few days the deposit shows up in QB and it gets matched to my deposit in QB.But I just have no clue how to account for these bounced checks since the bank has already matched them up with QB. 

I already own four that I have used the Brrrr method to purchase and refi. 

For a tight budget, the BRRR method is worth considering.

The HELOC terms differ from bank to bank, obviously, but I was under the impression that I would be able to secure 100% of my equity and I was wrong.Not sure what your current situation is, but have you considered house hacking as another method to finance your new purchase or pay down your current house?

If something did come up we have other methods to come up with the cash if necessary as our other cash on hand is for personal emergencies if necessary.

your method is the preferred way.... 

My main dilemma is determining which method to start with.

I believe that recommendations and word of mouth are fantastic methods of marketing and have rarely known of a GC supporting only a single investor.