Feasible to install on this hardware?

I have read the configuration guide (which I find fairly useless as it doesn't list the actual minimums) and lots of posts on the forum and I know that I am probably on the edge of minimum specs for actually using DaVinci Resolve but I want to try it out before I embrace it fully and upgrade my machine. So is it feasible to edit, basic colour correct and use to some extent the new integrated fusion toolset on the following machine?
Dual Xeon E5472 (3.0GHz old processors)
32Gb Ram
Geforce GTX 680 with 4Gb
Now I know the 680 is lower than the minimum for CUDA specified but Peter mentions being able to switch to OpenCL as an option -- is this possible and is anyone doing that?
Which OS should I try this on?
I am CentOS literate and have no qualms about going down this route but my current OS is Windows 8.1 if I try and install the 15 beta it complains about DLLs. Should I keep trying with Windows 8.1, install Windows 10 or go for CentOS 7.4?
Thanks
Dual Xeon E5472 (3.0GHz old processors)
32Gb Ram
Geforce GTX 680 with 4Gb
Now I know the 680 is lower than the minimum for CUDA specified but Peter mentions being able to switch to OpenCL as an option -- is this possible and is anyone doing that?
Which OS should I try this on?
I am CentOS literate and have no qualms about going down this route but my current OS is Windows 8.1 if I try and install the 15 beta it complains about DLLs. Should I keep trying with Windows 8.1, install Windows 10 or go for CentOS 7.4?
Thanks