First off Welcome to HybridZ and it's also nice to see another 2J build. I found a lot of useful info in this attached article as well as from this magazine Dsport Magazine on other 2J builds as well as talking with many of the supplier companies (Titan, MVP Motorsports, Power House Racing, Driftmotion, ETC..). I would suggest if you have not already heed the warnings and address the few problematic components of these engines (modified oil pump, billet timing belt tension-er, modified timing gear) for engine longevity. I think you are going a bit overkill with a girdle at those hp goals, but if you can afford it, it would be one step more towards bullet proof. Same could be said for the billet main caps which will require a pricey line bore, but a check will need to be done on the stock tolerances and again one step closer toward a bulletproof engine. I certainly won't dissuade you from taking every action or opportunity to build your engine to it's fullest potential for longevity again if you can afford to then by all means do so.
I am going for low 600 crank on E-85 at high boost, but will also run flex fuel option and most of the time on a lower boost with premium (91) here in California. Definitely fortify your car to combat twist with the torque you will be producing. Definitely add to your build thread as you make progress and good luck with the build.