Sir,
I am Thomas, a French systems administrator for a small ISP and hosting company.
I have previous experience with using Solr to build a search engine for Typo3, as well as few years later, adapted to Drupal 8.
Therefore, I know how to install, configure, and maintain online the Java Tomcat server that is needed, as well the Solr applet of the version you wish.
I will also be able to make sure Solr reboot when it crashes (it sometimes happens, due to the instability of the Java JDK/VM).
I could get that done in a day, even today :)
Can you please PM me so we can discuss ?
Regards,