How to build a targeted Wholesale list?

[Spencer Scott]

Hello Bigger Pockets Family,

I could use some advice, I am a rookie real estate investor with 2 properties in the North Dallas area and I want to put all my money into becoming a Wholesaler. I have done a ton of research and want to jump in head first. With that being said, I have hit what may be an imaginary wall right out of the gate. I have budget 3 to 5 thousand dollars to get me started with a direct mail campaign, but here is the problem. No matter how much research I have done, I do NOT feel comfortable in my list building skills. 

How do the professionals like @Michael Quarles, @Lance Wakefield, and @Brett Snodgrass build their list? 

What list company do they use? 

What inputs do they look for?

Is % of Equity all that matters when building a List? 

What size list should I purchase for round one? 

How can I find a local mentor? 

How can I convince them to work with me? 

I am hyper focused to get started on this campaign, but right before I dove in it hit me. The list is maybe the most important part Wholesaling. Am I walking the thin line of paralysis by analysis? Should I say screw it, jump in and learn from my mistakes or should I look for advice/partnership first?

Bigger Pockets Family hit me with your wisdom!  

Sincerely,

Spencer Scott