Is my engine performing as it should??

I'll say again. XE268 and Comp 901 springs. Leave everything else alone. Shoudl cost about $400 if that in parts. If you gear up later, so much the better. But you dont have to. And take those dyno sims and use them when you're playing Wii. They are as good as any video game, but if they come out accurate, there is a certain amount of luck associated with their result. They are ALWAYS high.