Well getting items for SM is really easy. Nobody wants such stuff, most of the items i have are given to me for free, bcoz no other locks need them. In fact, finding good gear for spell setup is much harder and costlier than SM gear.
And as for points, i have almost all cc's in my setup, you only need 30 points for the SM tree (you get 20 from lightning ice blast fireball mana burn) and getting the rest 10 points is easy. I just reduce my cc level and change my combo accordingly.
And for defense. Its all the same for both SM and as a spellcaster, but like i told there are a lot of items for SM (bcoz no one wants them), you can just choose the ones with good resists and enhance them (from enhancements from x-mas trees like i did).
PS : Taking the case of a lock only, Warjurers are better of playing as a conju (benifits the realm
)