Sorry, I just re-read you your post. Here is what I would do:
Install latest SMH. Do not install 7.3.2 on Windows 2003. This breaks SMH as Windows 2003 does not support the the versionof PHP included in the SMH 7.3 familiy. Use 7.2.3 for Windows 2003 and 7.3.2 for Windows 2008 and up. This fixes the Heartbleed bug in HP SMH software.
Install latest VCAgent if you are using it. You can use 7.3.2 version of the VCA for both Windows 2003 and 2008 and up servers. This fixes the Heartbleed bug in the HP VCA software.
If you are worried your existing certificates have been comprimised, delete the certs as you outlined in your post and restart the SHM agent service to have them regenerated. As you mentioned you are not using PKI you can ignore my earlier post regarding creating CSRs...and that is a lot of work anyways.
Hope this helps.
NK