A HELOC can be nice, because it enables you to act quickly. 

approximately, how much of each down/closing costs(per deal) were you able to recover, percentage-wise, of that money on your cash out refi to enable you to reinvest in another hold?

Not a lawyer so no legal advice, just a question:  Wouldn't filing for bankruptcy protection enable you to keep your primary residence and also possibly have the courts help you to go back on monthly payments for your tax debt? 

This will enable you to accomplish more in a shorter period of time than if you rely on just yourself.

@Frank LaQuagliaIf your goal is to spend the least amount of capital, then compiling your own list from D4D, going to your assessor's office, and other means of doing the work, and printing your own mailings in house will cost the least.If your goal is to scale up and do decent amounts of mailings to have a solid pipeline to enable consistent deal flow over time, eventually you're going to want to outsource the your print/pack/ship of DM. 

You can pick someone who's (A) attentive to your needs, (B) very knowledgeable about the area, (C) not just trying to sell you any house.Technology to enable the teamI use Google Sheets to track all of the properties in play with my real estate agent.

So that would enable me to purchase more on the budget that i set for this campaign. 

This enables you to vet the information provided by the Vendor with the Tenants and/or Service Providers (i.e. leased water heaters, HVAC, Laundry,  landscaping services, etc) to see if the views of the relationship terms align or not.

After years of reading books, articles, forums, listening to podcasts, youtube, attending seminars and webinars, I've made myself (credit score) attractive to lenders and have been approved for a first time home owner loan, FHA.I've been obsessing over my local market for over a year and now that I can actually participate in it is exciting...so much so that my judgement is periodically impaired by emotional enthusiasm, luckily however, all the previous education has enabled me to level out and think critically on the numbers and locations.The problem I face now is that all of the properties currently on the MLS are all the leftover scraps that have forever remained on the market and are terrible choices in everyway.

You could get a Solo 401k plan that enables to invest in both RE and the stock market.