ZODB and Zope on one Linux machine, how?

[Rene Pijlman]

I have a productional Linux web server with a Python/Zope/Plone. Now I'd
like to install a non-Zope Python/ZODB application on the same server.
What is the recommended way of doing that?

Option 1:
Install ZODB in the Python installation in the usual way. Should I expect
problems when I install and run zope with that Python installation? 

Option 2:
Do not install ZODB in the Python installation. Install Zope in the usual
way. Add Zope's ZODB modules to the application's PYTHONPATH. But this may
cause upgrade/compatibility problems with the application when Zope and
the ZODB in it are upgraded.

Option 3:
Use separate Python installations for Zope and the application. Install
ZODB in the application's Python installation, not in Zope's.

Option 4:
?

I'm using:
- Python 2.3.5
- ZODB 3.2.10 (same as in Zope 2.7.8)
- Zope 2.7.8
- Plone 2.1.1
... all built from source on Debian Woody.

Thank you very much in advance.
-- 
René Pijlman