SEO questions for authority website

Hello everyone,

I'm not new here and not new in the IM world.

Let's get to the point.

I have an authority website in my country with about 200-300 uvs per day and I'm making a nice ammount of money every month but I have a few problems.

I was never a big fan of on page seo so after seoing a few articles I stoped. With unique content and a few backlinks I managed to rank (Top 3) for a few of my main keywords and for my other main keywords I'm ranking 2-4 page of google.

My problem is: IF I start seoing my articles now will I lose my rankings?

Also, I'm thinking of changing my domain name for rebranding purposes. What is the best way to do this without losing my current rankings?

Thank you.

In cases, you won't see changes in ranking. But in other cases, you will.

If your site is seen as authority, optimize the page. Pages like Wikipedia and other sites always change, and they keep their rankings. But remember there's over optimization penalty now.

For rebranding, you can use 301 redirects, but I recommend against it. Why fix something when it doesn't break? Perhaps start a new site. You will cover more base if both of the site ranks on the same keyword or other keywords.

You need to use a 301 redirect. You'll keep most of your SEO juice that way.
I did that for one of my websites in the past. I hardly did any SEO for the new domain, and Google loved it just as much as the old one, even after I removed the redirect later (didn't renew the old domain).

Thanks for your answers guys.

I think that changing my domain will also affect my rankings. You see my domain is a .com and from my tests with new websites my local google (google.gr) is favouring .gr domains. So with a .gr domain and some SEO on my articles I believe that I can get top positions for all my keywords.

Anyway, I think I'll start with on page optimization like audioguy said and I'll see what I can do in the future.

Avoid over-optimizing your content, if what you are doing right now is working, why change your strategy?

Rebranding can be very tricky as you have to use 301s, but even then you should expect to drop rank for a while. In my opinion, it would be better to simply build a new site rather than to rebrand it as audioguy mentioned. If you really think the new brand will do better, then build up a site with that, and you will have 2x as many pages competing for the same keywords and you will capture more of the traffic in the serps.