T3 BS3 J3.5 float logo left and menu right

Hi,

To create this layout I would like to make as less changes as possible to the layouts.

I tried several things but I can't work it out.

What is the best practice to keep the logo on the left and line up and float the mainnav to the right?

And a url http://hancy.nl.testbyte.nl/index.php/nl/ to the site...

Thanks in advance,

Hans