Snowy,
I'd reccommend you get a Celestron or Meade f/6.3 reducer to screw onto the back of your scope. This will give you lower, more useable magnifications with your current eyepieces and you'll have a wider field with the 30mm for finding objects. The magnification with the 7.5mm would drop from 266 to 168. Though going very much against majority opinion, I'd also reccommend a Vixen 8-24mm zoom eyepiece - very convenient and easy to use, saves swapping eyepieces in and out. See
http://www.excelsis.com/1.0/catalog.php?categoryid=3 for equipment reviews by users.
Tony