What's the point of having 21 strength in this build?
If you max PD at 7 and WM at 7, you only have 3 skill points left over...I would highly advise against converting 14 skills to attributes at a level 30 build...and only in some circumstances to convert 8 skills to atts (which would allow you to have a build like 18/21)
I'm not a dedicated archer, but I'd suggest 18/18 with rus bow or long bow (if you go 18/21 you will only have 3 Power Strike, which is terrible):
Level 30 (4 420 577 xp)
Strength: 18
Agility: 18
Hit points: 63
Converted: 2
Ironflesh: 5
Power Strike: 6
Athletics: 6
Power Draw: 6
Weapon Master: 6
You should be able to do like 150 archery WPF and about 50 WPF in 1h with that build.