Privacy, Protected Twitter Accounts, & Nearby Posts...

I have my Twitter account protected, meaning only approved followers can see my posts AND none of my posts show up in a Google search of my name (important to me). That said, I like the concept of the Nearby posts. Here's what I want to do/know:

If I post to Twitter via Twinkle's "Home" tab, are my posts protected from anyone not following me AND protected so they do not show up in Google searches but DO show up in the "Nearby" tab? This is what I'd like to be able to have ideally. At this point, however, it's quite unclear to me what is actually going on. Can someone please clarify? Thanks!