You won't game on regular basis?
Well then...
Downgrade that RM850 to something like a CX600 Watt power supply firstly since you wouldn't need such Wattage for a non 100% gamer specially with those mid-ranged specs.
and that's it.
Everything else is perfectly suitable.
The Graphics card in general in economic so there won't be so much power being pulled out your power supply.
Not only will this save you money.
It will give you more room space to buy a case that has more airflow within its insides.
Like the Corsair Graphite 760t
Hope this helps