AVCS will be tuned by your tuner. Nothing to change by you.
Your torque is 1000rpm too late. Talk to ASG to see if they can diagnose why this is the case. Something is a limiting factor. Could be simple like mac/3port.
I'm guessing the 'hybrid' turbo is a VF34 with a P20 housing. Should make a lot more power that it is.
Here's one of my old graphs MY05 WRX, STi TMIC, VF34, Panel filter, 3-port, Decapped Injectors (816cc), Under $10
BOV mod, Xforce
TBE, probably around 1.8bar boost (might be more, been a while)