Nice list, but what injectors are you going for? Have you installed a decent fuel pump? Have you matched the torque converter to the GTX35? Is the exhaust a free flowing 3.5 inch system? Are you close by an e85 servo? These questions are much more important than the Nistune one you asked.
I fabricated some parts for a GTX35 setup on an RB25 the other day, it made 430kw at fairly reasonable boost on the factory manifold, with plenty in reserve. I just hope you have the rest of the supporting mods, it's probably good for 500kw on a perfect setup. Here is the graph for comparison, yours will be a little laggier I would assume.