I'd really advise you to go for 18 str, for the damage output.
Since the recent armor buff, having only 5 PD feels a bit weak.
Please note that as a new archer, you'll have a very hard time killing thoses archers :
-lv 34+ archers, with 1 more WM, since firerate and precision will make a difference most of the time
-archers with nomad bow, who abuse the superior missile speed of low tier bow, and will aime for that headshot, when you don't expect them to release so soon
Also, to those saying you'll do fine with 1 wpf in melee, i'd still advise to have something like 70 wpf in your weapon of choice.
I personnally have 5 PS and 75 wpf in 2h, and i really do feel the difference. Though i'm weaker against dedicated archers, i really like this opportunity of just going rambo in melee.
My lv32 atm build (aimed for lv33)
15 STR
26 AGI
5 PS
5 PD
8 WM
7 Athl
75 wpf in 2h
171 wpf in archery
Even if you know you can't outrun infantry with a bow, having athletics helps against cavalry, and when you dropped your bow to fight in melee.
Good luck out there, and... don't try to win in a regular "archer duel" against lv35 dedicated archers. It's too much of a pain.