Infraction: 6. Do not post unless you have something new and worthwhile to say.
Message to User:
Don't answer terrible lazy posts, report them.
Necrosis would be the ideal place to take those points from, as it's not a huge dps loss. Whether or not it would be a dps loss relative to simply going full out on a blood sub-spec largely depends on your gear. It would be close, any which way.
Also, in case there was any question to it: Necrosis is still where you would take points from for Morbidity (in an AoE spec; it still isn't worth it in a single target one).