Unless you are a hardcore gamer or have certain specific requirements I would say no. I would however pick the FX-8150 that is clocked higher and costs $30 more.
Now wrt to the motherboard I'm gonna plant a little seed in your head as this is something I'm definitely planning on my next build.
Get a motherboard that supports hardware virtualisation (AMD-Vi" or earlier known as IOMMU).
Why do I say this? Do you like dual booting just to play a game in Windows or would you prefer not to reboot? If you installed Xen hypervisor (VM) then you can run both windows and linux on top of the hypervisor and AMD-V will allow Windows direct access to the GPU as you would have on a normal windows install. Granted you can only give one OS direct access to the GPU but you said you have plenty of GPUs lying around so you can install another GPU with much lower specs for linux as you don't really require much gpu power in linux, something like old 6600-8600GT will be plenty for linux. Picking a motherboard with the correct specs could be a bit limiting and if you are keen on this route shout as I will get you some links (I recently looked at Intel boards to do this.)
http://wiki.xen.org/wiki/VTd_HowTo Srcoll down to 'AMD desktop chipsets with IOMMU support'
Something else to keep in mind is AMD will be releasing their new Piledriver CPUs in Q4 2012 which are supposed to have improvements over the existing bulldozer line. So if you wan't to wait a bit you could get something better.
Either way AMD will be a good build option ;)