Strafe

[Taem]

CA/IcA/FA -> 20/1/20
MagA -> 1
Multi -> about 12-15 (or 1 if focus on Strafe)
GA -> 1
Strafe -> to your taste, I've always enjoyed using the skill, but it is really inferior to Multi in many aspects

IS/SlM/Decoy -> 1/1/1 (if you spend that much points into vit Decoy is sturdy enough at base)
Valk -> to reach 8 with adders
D/A/E -> 1/1/1
CS -> 16 (doesn't improve significantly further on)
Pene -> depends on actual CtH
Pierce -> 16 (see CS)

If spare points available, push Pene

Your build and my build around 1.09 look very similar (that's about when I stopped playing D2). I always found a freeze merc was more than adaquate to to keep the baddies at bay so long as I had knock-back in my bow, and I never bothered pumping mana, and if I remember correctly FA dosent leech which is why I never liked it much. With a poor bow, it did take awhile to kill baddies, but that didn't matter much with Knockback and Holy Freeze, because they could never reach me anyways. This was my build:

5-8 Multi (I figured at least 3+ in amazon bow skills)
20 Guided Arrow
7 Critical Strike (past skill level 7, your gains are 2 or lower and not worth the investment IMO)
1+ Penetrate (as you say, as needed)
9 Pierce (after this, diminishing returns kick in greatly)
6 D/A/E (after this, diminishing returns kick in greatly)
1+ Decoy
1+ Valk

All in all, this will use up 66 skill points to complete, with the rest ready to be put into Penetrate as needed, Decoy for the extra time if neccessary at all, and mostly Valk.

I would always put at least 134 into Strength for the dream of finding a Windforce, and the rest would split evenly into Dex and Vit.