Don't worry about the paperdoll...The avatar shape for me is fine and don't want add you extra work.
Also you don't have to be 100% accurate.
Take the marzo's u8 avater as reference for the golden part of the armor,use the paladin shape,swap the elmet with the blonde avatar head,color all the vest white and put some sort of ank on his chest..And you should be fine...
If argentorock is listening i wuold ask him,if he can give the u6 original blonde avatar portrait and made one with the tatoo for SI...
Can be silly but U6 was my introduction of the series and it's since that i was a kid that I dreamed to play with the avatar outfit as display in the u6 cover.
Will be nice to play the u6 remake with the proper outfit as well replay u7 and Si
If you can make this little dream of mine true i will be very happy
If not thanks anyway for listening