On the graphics card, I always preferred EVGA, such as the EVGA 04G-P4-1970-KR. My reason for that is this card has a blower, rather than
a traditional cooling fan. The blower forces cooling air thru the card housing and out the back of the case, rather than recirculating it within the case.
But as others have stated, RedSDK doesn't have support for the 900 series cards as of yet, so performance may be diminished. I haven't done much in the way
of RedSDK rendering, so this isn't a problem for me yet. By the time I do start with Red, maybe it will be supported.
Currently what little rendering I do, I use LightWorks. The new TC2015 takes advantage of all cores, so if you went with a 6 core CPU such as
Intel i7-5930K, you actually get up to 12 cores running when rendering in LightWorks.
I haven't used an SSD. Their advantage is in speed when booting up, or starting up a program. I hardly ever shut off my PC, just put it in sleep mode. Even when I do have to power it off, it takes only about 3 minutes to boot up. SSD's could shorten this time to under a minute.
TC 21 Deluxe, TC 20 Platinum, TC 2015 Platinum, TC 2016 Platinum, TC 2017 Platinum
i7- 3770 Ivy Bridge 3.4 GHz, 16G Crucial Ballistic, ASRock Extreme 4, EVGA 1060 SSC, Windows 10 Pro 64 Bit