Apple Mac Pro 2.66GHz 12-Core Intel Xeon Processor MC561LL/A (2010-12)(for $2,719.00) is that a good used computer to buy to editing video with

I'm looking to upgrade my Mac

Model Name: Mac Pro

Model Identifier: MacPro1,1

Processor Name: Dual-Core Intel Xeon

Processor Speed: 2.66 GHz

Number of Processors: 2

Total Number of Cores: 4

L2 Cache (per Processor): 4 MB

Memory: 8 GB

Bus Speed: 1.33 GHz

To this computer.

System Configuration:

• Memory:

  32GB (4 x 8GB) PC10600 1333MHz DDR3

• Storage:

  1.0TB OWC Electra 6G SSD

• Optical Drive:

  18x SuperDrive (DVD±R DL/DVD±RW/CD-RW)

• Networking:
  • 802.11n/b/g Airport Extreme wireless
  • Built-in Gigabit Ethernet 10/100/1000BT
  • Bluetooth 2.1 + Enhanced Data Rate (EDR) wireless technology
• Video:
  • ATI Radeon HD 5770 graphics processor
  • Two Mini DisplayPort ports
  • One dual-link DVI port
• Pre-Loaded/Licensed Software:

  Pre-loaded with Apple OS X 10.6.8
  (Supported by Apple for up to Mac OS X 10.11 'El Capitan')

I'm using Adobe CS6 to edit, it works ok but Speed grade doesn't work, and it take for ever to process a video. I have order Adobe CC and it will not run on my computer. Is this a good buy and any suggestion. PS, I am a photographer-editor not a computer person.

Lorenzo