Nice work...and yes the passenger side is the PITA. When I did this back in the day on my 350z, I figured external wastegates would be the best option:
I found that the passenger turbo clocking was difficult but it worked out:
You will find that the IC pipes will be a bit of a pain, but it looks like you put the turbos a bit further back than I did, so it may not be too bad.
Good luck with the build, and post a lot of pictures.