How do these cluster specs look?

Thought I’d solicit some expert advice before dropping a sizable chunk on this setup. Will be running RHEL and using for Maya/Mental Ray. Does it seem balanced and can you spot any potential bottlenecks?

Head node:
1    IBM System x3650 M4 HD
    proc:    Intel Xeon Processor E5-2650 v2 8C 2.6GHz 20MB Cache 1866MHz 95W x2
    RAM:    128GB
    disks:    26 SSDs for 6TB Gross space


Render nodes:
6    IBM System nx360 M4 Computer Node (NextScale)
    proc:    Intel Xeon Processor E5-2670 v2 10C 2.5GHz 25MB Cache 1866MHz 115W x2
    GPUs:    12 - NVIDIA Tesla K10 (Dual NVIDIA GK104 GPUs. 8 GB RAM per GPU, (4GB ea.)
    disks:    IBM 500GB HDD ea.
    RAM:     each 64GB - 24 - (1x16GB, 2Rx4, 1.5V) PC3-14900 CL13 ECC DDR3 1866MHz LP RDIMM