First of all, thanks to all for your opinions I appreciate it.
Second as a class I chose a mage. As someone of you say it quiet strong in actual meta (standard and wild) and have diverse builds so it makes it more entreating. Also I was considering myself that choice cuz I love that blue glowing skin that have Jaina and in some way I enjoy actual mages builds, so....
Also this helps me to consider a Druid as next if he continues ok like now. As for warlock, ehm.... well maybe sometime in future hehe. As for priest, personaly I hate it. For me is so damn boring and it will be last I think.
For someone of you asking me, actually I have plan that is: minimum 10 wins per day. So if I start with 20 like mage now, it should be done like in month and half. I come with this plan with hunter and rogue (last ones) to golden.
Again thanks too all for help and see ya around!