Daily work PC build opinions

Just wondered what peoples' opinions are on these components for a build I'm planning.

http://nz.pcpartpicker.com/p/thDysY

Two SSDs (to be run in RAID 1) for OS and primary programmes is probs overkill, but I just need to make sure if a drive dies I don't have any down time whilst waiting for a replacement.

Don't really need a flash GPU, hence I've gone with the reasonably tried and tested (for other office builds) GT740, which I know can handle 3 monitors, which I may want in the future.

Will be installing my retail version of Win 8 Pro and then upgrading to Win 10 Pro straight away (or maybe I should just download Win 10 Pro from Microsoft and use my Win 8 Pro serial to upgrade?)

Thanks for any opinions.
 
Thanks for that, and yes I realise the need for backup, and as the article states, if you suffer a bad power surge then both drives will die. My thoughts are more, if one drive goes bad, suddenly, then all I need do i boot from the mirrored drive and I can carry on working as if nothing has happened (whilst in the mean time sorting out a replacement for the other drive. Data (from the regular HDD) will be backed up externally.
 


Surely though in RAID 0, if one drive went kaput suddenly, then it would still be valuable time out of my day where I'd need to re-install the OS and software onto the other drive to get up and running again?