well to me it looks like your pulling major timing at about 2.5 sec. in where it looks like a 2 deg drop if not more. Being under 5 to me is very low for ign. advance. May just be due to your car being stock with increased boost.
Personally i'd like to see my boost curve hug the boost control set point a little better. Looking at your graph and seeing that the boost struggles to get there mid pull and barely touches means its a little high. Generally you want to get to that point asap and hug it all the way across the pull. @ about 5K you can see the turbo just runs out of steam and starts decreasing...
I would set the boost control set point closer to 14psi for now and see if your ignition increases a little towards to the 10 mark.