Hello people! Would love your input on my initial plan to step into the world of AM and also give me a seemingly better chance to find the first green campaign?
1. Since I'm starting with nothing, would it be wise to find a funnel on spy tools and try to gather some whitelist sites/zones just to test offer (in the same niche/vertical/category) more efficiently?
2. After gathering, if not a good whitelist, at least a good blacklist, to start testing a bunch of offers in the same vertical?
3. Start working on the offer that wins in step 2 and if it works, re-introduce network wide traffic and optimize again?
The thought of running everything into an offer/funnel that may or may not convert seems a little "off the ground" to me.
What kind of traffic are we talking about here? Pop/push? Other?
I'm going to assume we're talking about pop or push. 
Your thinking is solid. This is assuming you can find a blacklist/whitelist you can trust.
Some traffic sources will give you a list of placements to start with (e.g. zeropark). I'd start with that if I didn't already have my own.
If you can't get a blacklist from a trustworthy source, just do your own testing. Use low-payout offers to identify good vs. bad placements for cheap.
As for not being confident about your funnel - this is EXACTLY why you should split-test ads, landing pages, and offers.
To increase your chances of finding a winning combination:
Offers - start with AM-recommended offers
Landers - start with landers from spy tools that have received a lot of traffic, that you see lots of instances of - if they're popular and a lot of traffic has been sent to them over at least a few days, chances are they're decent converters
Ads (assuming push here) - get inspiration from the most popular ads in spy tools (lots of traffic sent over a few days or more) and INNOVATE. Ads burn out a lot faster than landing pages.
Test a range of funnel elements (offers + landers + ads) and you'll soon get a sense of what good and bad metrics look like.
Also: In the first 1-2 campaigns you run in a certain geo on a certain traffic network, you should be able to identify the worst placements. After that is when you can implement your idea: When testing new offers and landing pages and ads, do so on your "best traffic", ie. either with the worst placements excluded, or on a whitelist of placements that have converted. If you see profit, open the funnel up by re-testing some of the excluded placements in batches (to avoid cutting into your profits too much).
Hope that helps!
Amy