[JAG SS]

I am on the verge of completing all of the exterior/visual mods to my car, and have started to explore my options for increasing my performance. My goal is not to reach zl1 level power. If I want that in the future, I'll just get one. However, i would like to be closer to 550 rwhp.*
Option 1: Pray tb and im, arh long tubes, cai, and flex fuel tune.
Option 2: I have done some research into several of the companies that perform upgrade packages for our cars. ie: sve zl660, fireball performance 700, and hennessey hpe 600. I lean towards the hennessey package. They are the only one that is not just slapping a procharger on it and calling it good. (Not that that is necessarily a bad thing) once again, I would just go buy a zl1. I like that its 600 hp naturally aspirated. The package is basically heads, cam, valve train, headers/exhaust, tune.*

I do not know what option 1 would cost me? I've seen some pretty good numbers from you guys with similar set ups. I can do most of that work myself, I would just have to find someone that I trust in the tulsa are to do the tuning to make it all work.*
Hennessey is charging 14,000 for the hpe 600. Is that a fair price for the work done/ power gained? Its several thousand cheaper than the procharged route, and I just drop it off and pick it back up completed. No blood, sweat, and tears on my part.
Any advice on these two options will be appreciated. Or if you have a totally different route that you would reccomend, I am very interested. Thanks in advance, for your input!