maz, no offense but yer crit is absolutely terribad. that being said, u have a gear setup made for either deep demo felguard or afflction. and since u have a crapton of hp and a good median of spell damage i would recommend 40/21/0 for boosting. at least at lower levels. do what shini and dagre said. literally run in and put AT LEAST siphon life on everything, corruption would be great too, that way u get plenty of life back and they will most certainyl die.

another option is to utilize the mitigation of a demo build. u take less damage if u do pull aggro, and yer stamina/mana/damage goes up according to yer pets stats. for boosting in instances though, felguard is a failure unless u do small pulls. with a VW u can literally pull about 20 guys, seed 5 of em and watch them suffer, felguard u could prolly get 5-10 going before u need to heal the pet.

my personal choice, and somethign that yer gear doesnt allow for due to low crit, is pvp fire/shadow. this is */*/44+. this way u get more crit(though yers will still be low), when u get hit u have a chance to get an instant damage spell, and shadowfury. shadowfury is a great talent, not for raiding, but it is THE best way of proccing all of yer seed of corruptions at once. i send my VW in gather up 20 guys or so, seed 4 of em then immediately shadowfury, if they dont all die from the seed, the shadowfury is the little extra oomph they need to die. outstanding good fun.

links to the builds i said in order:
http://www.wowhead.com/?talent=Iq0riMfdVtbZbxczIr
http://www.wowhead.com/?talent=Iq0rV0sZbxczIiz0esx
http://www.wowhead.com/?talent=IV0bZbxZxx0tr0tVuAo (3 spare points)


these are just a few examples, in the demo spec the VW really pops! both of u take 10% less physical damage, which combined with demonic resilience is 25% less damage to yer pet!! very handy! and yes u can get a felguard if u like, they are very fun.

anyways, my experience with lock boosting only applies to SM thru ST. in strat i failed miserably, i do not know if it is because i was undergeared at the time, they hit too hard for a lock, or my spec was wrong i cannot be sure. tbh itd be best if u had a mage or a RL friend with a mage, i got a mage friend and its handy lol. hope this helped