Advice/Help on New PC?

I'm a noob when it comes to PC building and have been reading around a bit trying to put something together (would like it to be able to run Witcher 3 comfortably etc...) and was wondering if anyone could comment on this preliminary build I've put together and maybe point me in the direction of more information?

My main questions at the moment are:

• Should I go for 16 gb ram?
• Is the CPU/GPU choice good? The cost it's at the moment is about what I wanted to spend but I could push it a little higher if need be though would rather not
• How are the motherboard/PSU I've chosen? I'm not super certain how to choose/compare these components (I've read a few guides and reviews but it is hard to discern still).

I'll choose a case at the end and most of the peripherals I have sorted already (have older ones I'm willing to use until I have more money to upgrade things like the monitor down the track).

Any general tips or advice or comments would be greatly appreciated - nervous to sink money into something and stuff it up - but have been waiting for a while to have the time to do this! Thanks!

Ok, I'll make a list of things I've changed:

• You're paying too much for the SSD, changed.
• Getting 980 is waste of money, either 290/390, 970 or 980Ti.
• Changed the CPU/MOBO/RAM into a cheaper solution while upgrading GPU boost at the same price. (cheaper doesn't means much worse - CPU is lack of OC)

http://au.pcpartpicker.com/p/fPshhM <<< this is the final build, with this setup you'll be able to run Witcher 3 on ultra at 4K

16Gb of RAM is unnecessary ATM, you could always add more RAM.

Thanks for the improvements! I've never run crossfire/sli before - is there anything I should be aware setting up/running it that wouldn't apply to a single card set up?

Yes, what's your current case?

An old Antec case - this one I believe, that being said I think I should maybe get a new one too as that one had issues with dust in my house (very dusty house). It was often hard to prevent dust entering through the top ventilation and accumulating quickly (so would often have to clean it out). Think it would be better to try and get some dust filters for the fans and reuse that case or get a new one?

Sadly the link you gave me redirects me straight to their official site "We apologize. No page match can be found"

Anyway just make sure both GPUs can be fitted inside of it, if you'll need a case advice as well Zalman Z3 Plus

This! Currently Crossfire R9 390's will max any game you play.