Opinions on sorcerer build?

I’m fairly new at the game but I want to understand all mechanics and builds before I start grinding. I’m thinking of something like this to use flash freeze’s fire resist reduction and absolute zero’s physical resist reduction combined with fire&physical damage abilities of demolitionist and cd reduction&meteor shower devotions. I think resistance reductions don’t work on bosses so I don’t know if this will be viable to kill bosses, nemeses etc. What do you think? I’ll adjust some skill points according to set bonuses but I want to know if the idea is good enough to grind elite&ultimate.

htt ps://grimcalc.com/build/1007-6OB3pC