I actually like the filters. Seem to fit very well with the render. Good work.
Text is okay. Maybe you could just add an outer glow. And I would change the bg colour. Blue would be fine. I would also add a black and white gradient map and set it to soft light to create more depth. Then this would be a very nice piece. I love it

Btw: What is Topaz? Photoshop-Plugin? Where can I get it and what does it do?