S4V4G3

Hi guy im not quite savy with the newer ford engines and i have not got much experience working on them although i know the old pintos like the back of my hand. The thing is i have just brought my self a 2008 fiesta mk6 zetec s petrol and want to squeeze every last bit of power out of it. I know that standard these 1.6 16v engines are running high 90's bhp and that just wont cut it for me. So my question to you guys is how can i get the figure closer to the 150-200 mark? I know that more than likely i am looking at better internals and have already ordered arp bolts for the engine. I intend to put some higher lift cams in the head and also port and polish it. New intake system with new throttle bodys, a new full exhaust system and new engine management but what else can i do to it? I know alot of you will say just do an st engine conversion but im not going down that road i want to stick withthe standard 1.6 16v engine no matter what.
Any help you can give me will be brilliant cheers guys.