Is your requirements to disable lucene binary index & use SOLR OR use both?
One option would be have alternate index to implement your own listeners in CRX on content modification that would update a separate SOLR index using SolrJ Client lib.
Then need to overlay any CQ search components (i.e. foundation search, DAM, Content Finder) to incorporate SOLR queries.
can solve ur prb by contacting drishtics...
i donno too much detail regarding ur query, but whenever i have one, i buzz 'em up...:p