Not intenting to disappoint you, but this looks unplayble to me. One must be a very special person to enjoy playing with this build I think.
The arrow weight slows you down a lot, the shield on the back increases this effect, even if it is a buckler. With only 6 Athl, you will move like a turtle, but as you carry a bow in your hands, you will end up as a porcupine. With 0 IF, I don't expect you to survive more than 3 arrows from an average enemy archer.
If you want to be competitive as an archer-shielder-hybrid, reach level 36. On level 36, builds for hybrid archers look at least like they are as strong as other level 30 builds in both areas.
LEVEL 36
18/24
2 Skills to Attributes
1 IF
6 PS
6 PD
8 Athl
8 WM
50-75 1hand wpf
rest in archery