Version 1.3 of Audirvana Plus for Windows 10 now includes support for VST3 plugins. Restart Audirvana Plus to upgrade to the new version 1.3 and you could use your equaliser and your preferred acoustics corrector.
The installation directory is set by the VST3 standard. Just use the plugin installation program and then relaunch Audirvana Plus.
FYI, there will be no development of VST 2 for Audirvana Plus for Windows 10. Indeed, Steinberg announced 5 years ago that the VST2 format was obsolete and replaced by VST3. The end of the transition period ended in October 2018 with the complete removal of support and SDK for VST2.
For more information on Steinberg’s removal of VST2s, please read Steinberg’s release.