We are working on a new website that is golf related and wondering about whether or not we should set up a subnavigation dropdown menu from the main menu.

For example:

GOLF PACKAGES
  >> 2 Round Packages
  >> 3 Round Packages
  >> 4 Round Packages
  >> 5 Round Packages

GOLF COURSES
  >> North End Courses
  >> Central Courses
  >> South End Courses

This would actually be very beneficial to our users from a usability standpoint, BUT what about from an SEO standpoint? Is diverting all the link juice to these inner pages from the main site navigation harmful?  Should we just create a page for GOLF PACKAGES and break it down on that page?