I also use fltplan.com and find the climb and wind selection (and presentation) to be helpful in selecting the proper cruise altitude.  You can see my LOP climb/cruise/decent parameters on a previous LML posting.  You can also import anyone's LIVP parameters from their profile into yours.

http://mail.lancaironline.net:81/lists/lml/Message/56262.html?Language=

Jeff Liegner
LIVP