Should I get this PSU?

I'm trying to upgrade my Lenovo ThinkStation P300 from the stock 280W Lite-On PSU to something that would accomodate an 84W Xeon E3, GTX 970 (not purchased yet, thankfully), and Quadro K620. So I've been hunting for deals on /r/hardwareswap without much success of finding some decent PSUs (didn't help that I have a shockingly low budget). Recently, however, Corsair released new VS series PSUs. So I was wondering: is it reliable does it perform well, and enough to keep my system running for years to come?

My budget is $60.

P.S.: The rig will be used as a rendering rig for Premiere and AfterEffects (as compute) and gaming. The 2 GPUs will be in MDA mode.

Specs in case it wasn't clear:
Lenovo ThinkStation P300-30AH
Intel Xeon E3-1231 V3
Intel C236 chipset
NVIDIA Quadro K620
Gigabyte WB-867D-i Rev. 4.0 (Intel 8260)

Potentially a GTX 970 I'm getting from a friend
 
1) That would fit, but I'm using a non-standard rig, and would need to pay $12 more for a 24-pin to proprietary 12-pin rig. I usually recommend the SeaSonic myself, but at this time I don't have the money for it.
2) 550W isn't enough to drive 2 GPUs... Even if it is a 75W-max card.