Hi @Abaddon. Hope to see your toon in PVP soon!
Good choice in switching to chakram. Boomerang skill is very good at triggering procs. @kajfik000 build described above should be all you need to reach Eternal Div1.
To make it to Eternal Div1 you will probably want at least 40,000 - 100,000 health in arena (1 million - 5 million in health stats). Survivability is very important. I personally put 50% health and 50% power which gives me 47,000 arena health. Heroic skill points don’t count in PvP. The only way to get heroic skills in PvP is to add a +10 skill affix (+10 blinkstrike).
Keep in mind the following:
*Hero & Items scaled down to LV 20
*Damage scaled down by 95%
*Mythstone affix scaled down by 70%
*Stat caps scaled down by 60%
*Natures on equipment are not reduced
*All Talents on equipment are reduced by 80%
Here’s a list of PvP stat reductions.
Best of luck!