CiviEvent: Event info and registration form on one page?
What you can do is skip the Event info page. You can link directly to:
/civicrm/event/register?id=1&amp;reset=1

For the info:
In Drupal you'd add a block on the register page to show the Event info/details. I'm all but certain that Wordpress has a concept similar to Drupal's 'blocks'.