here is a good article http://forum.supercell.net/showthread.php/553637-Morgauth-s-complete-guide-to-rushing-Townhall
my opinion:
if you feel like rushing, rush to th7 and from th 5 & 6 spend one week upgrading stuff . then go to th9 which you stay for a while so you can make your defences catch up. while the th is upgrading upgrade barch and get your collectors and defences up so you dont 3 starred with barch easily