I'll focus mainly on native traffic, but I will bid low on Google Search to get some cheap high-quality traffic at the same time.Have you worked out how you're going to split your budget?
The main problem for me is that English is not my native language. That's another reason I post pone my campaigns.
I'm reading every nitty-gritty on affiliate page, and watching the VSL several times (for top 20 offers on ClickBank, those videos are pretty long, I have to say), to make sure everything goes well.