Interested to hear (literally) how you get on.
I went with a HX35 for my (non vvti) 1JZ, but you are much closer to having it running (dam you!).
I also went with 25nb for my manifold, although due to space constraints I used a Tri-Y style with short 25nb primaries into 15ยบ merge collector 32nb secondaries up to the twin scroll flange, with a 44mm EWG (split up to the vavle face). Fingers crossed it works out OK.
Slightly OT, it that your old chaser that is for sale (again) on the tard at the moment.
[ps. Mad props for getting all this done whilst being a new dad, I know what that is like, albeit without getting anywhere near are far as you have]