You just need enough strength that you can quad kite without running too slow. Its not really a factor once you can get some weight reduction bags.

http://wiki.project1999.com/Large_Soiled_Bag

I've got low str on my mage and it's pretty annoying, and she can even summon WR bags.

Then again at 48 she still has 7-8 pieces of gear that are cloth equivalent with no real ac, stats, or anything else ... so maybe i should just get some str gear and stop bitching :D

For the mage I can see sacrificing int/mana for str any day of the week. Deeper mana pool doesn't matter as much when you aren't quadding.

I wish I had more strength on every single toon I’ve ever leveled. Primary stat (int) is pretty easy to cap