Suggestion for a Monitor for nodes running apache solr

I am trying to find a good monitor on the f5 for some nodes i have which run apache solr for search...

I was playing around with an HTTP monitor, where I put in Send String http://hostname:port/SolrContext/admin/ (is that GET /SolrContext/admin\r\n\r\n?), then look for a Receive string like [SCHEMA].

However, i'm trying to find something that really checks the app health. If I put this in a browser: http://hostname:port/SolrContext/select/?q=love&version=2.2&start=0&rows=10&indent=on

I get this XML back (and more): 0 0 on 0 love 2.2 10

But the check doesn't work in the above scenario with this Send String: GET /SolrContext/select/?q=love&version=2.2&start=0&rows=10&indent=on

..and this Receive String:

I think i'm missing proper syntax here being new to custom monitors