@XipeTotec - 150m should build you a decent set akin to what we've given away. My suggestion would be to go to the WD sticky and study the builds there for a day or two until you decide which build you like the best. Gearing will be pretty build dependent so that's a good starting point.
Cloud of Bats (CoB) builds are all the rage right now because the skill got a big buff in the last major patch. I'm running that on my WD if you want to take a look at her (Calypso) to get an idea of what that build/gear looks like.
Runit3 and Isolation are a much better WD resource than I am though.