your planned exhaust is to big, 2.5 inch all the way, no.
RE: GZE POWAH!! - N/A engines are not designed to run boost, i recommend not doing it, id get some lumpy cams instead. Also use the search function, you will learn more than u can possibly imagine about this subject. If u did decide to make the 4age into a F/I engine, u would need lots of things changed... search and you will find answers.