I've been toying with the idea of level capping 4 of everything on all accounts (probably with 2 of some things). And I'm starting to think it would be faster to just do 3 at a time instead of 4 at a time. e.g. one fairly-geared level 70 toon and 3 noobs, rather than 4 noobs. I'm pretty lazy tho, so i dunno if I'll get around to it.

I found DH underpowered too. Tho strafe was fun. The build you describe is basically what I did. I found spamming multi-shot / burst fire more efficient than strafing though, for grinding that one quest in Act II. I didn't do strafing until I was level-capped.