Adobe's EULAs can be found at www.adobe.com/products/eulas.
The PRE8 is here .
My interpretation is that you can do what you suggested.
2.4 Portable or Home Computer Use. Subject to the important restrictions set forth in Section 2 . 5, the primary user of the Computer on which the Software is installed under Section 2.1 (“Primary User”) may install a second copy of the Software for his or her exclusive use on either a portable Computer or a Computer located at his or her home, provided that the Software on the portable or home Computer is not used at the same time as the Software on the primary Computer. You may be required to contact Adobe in order to make a second copy.