10-12 business days.
Technically, you'll start to see results right away; however, it takes time for a campaign to "normalize" to the point of understanding how it will perform long term.
This process will vary greatly depending on whether it’s a site redesign or a new domain….
Yes you can with a smart strategy.
If you're already achieving 3%, 5% or even 10% conversion rates, is that as high as you're going to go?
You will see consistent correlation.
A high level overview of how SEO works...
Why You Shouldn’t Always Listen to Google’s Suggestions...
Search Terms Report for Smart Shopping -