Can i downgrade from Yosemite to Mavericks by using Mavericks Time Machine Backup?

Hey guys! Well I am in the position of needing to buy a new Mac, but I need it to be on Mavericks due to programs that I run and stability issues. I would love to get one of the new mac minis, but am aware that they ship with OS X Yosemite. Is it true that I can downgrade to Mavericks by restoring the new mac mini from a Time Machine backup that was done on Mavericks? I have heard that this will work but wanted to make sure before I move forward.
Just to be clear, I would take a Mac Mini that has Yosemite on it and restore it from a Time Machine backup that was done from my old Mac (Mac Book Pro 17")  that was on the latest version of Mavericks.
Thanks so much guys!

There should be a hidden Recovery HD on your Time Machine backup drive. Boot using OPTION booting:
Boot Using OPTION key:
  1. Restart the computer.
  2. Immediately after the chime press and hold down the
      "OPTION" key.
  3. Release the key when the boot manager appears.
  4. Select the icon labeled Recovery HD 10.10.
  5. Click on the arrow button below the icon.
Then do this:
Select Disk Utility from the main menu and click on the Continue button.
After DU loads select the volume you wish to erase from the left side list. Click on the Erase tab in the DU main window.
Set the format type to Mac OS Extended (Journaled.) Click on the Erase button and wait until the process has completed.
Quit Disk Utility and return to the Main Menu.
Select Restore from a Time Machine backup and click on the Continue button.

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