potential power upgrades

[Juliant88]

hey guys was wondering if you could help me out here was wondering on what else id have to do to make 550wp on this gtr build im thinking of doing. The build spec ill post below. All the feed back i can get is great;y appreciated.

Engine

supertech oil pump gear set
wiesco forged pistons
weisco k1 forged rod set
clevite main bearing set
clevite rod bearing set
tomei oil baffel plate
tomei metal engine head gasket set
n1 water pump
splitfire coilpack


cylinder head

tomei cam cap stud set
tomei procam (270/10.8 lift)
tomei oversized buckets
tomei valve springs
apr headstud kit

cooling

koyo radiator
samco radiator hose set
mishimoto rad fan set