my setup was the same kit i put on my car in 2006. i was pretty satisfied with how it was. ive told you the plans i had for it. but then interest in the car disappeared.
except for the AWIC/unisucky its pretty close to what you have planned.
i was all setup to get a PPT Vband/6262, SEM or APR(i like it better, and its proven better) RS4 TB(75mm) Tapp M7/Bosch hi-z1000s, IE 044 surge tank, the head you are talking about that arnold has was on the table and up for grabs.
i just hope for your sake you dont fall victim to what is becoming more common with the 1.8t, which is losing a valve (supertechs, which is why i said Ferrea in the other thread) because bye bye block, head and turbo. would be a shame for sure.