This might be some help. It looks like you have a great start there . I wouldnt get too extreme about the topology , just try to keep it clean where it matters most .

There is a book of polygon patterns and how to use spinquad to fix them but somet8imes the flaw propogates around the model :( 

In lightwave stars are sometimes good places to collapse the polys and manually split them up to fix the loops .

Heres another tutorial thing.. www.3dlinks.com/oldsite/tutorials/GENERAL/chapter6_8.cfm

I cant see much of it on my dialup link so I hope it helps .