It may exist an easiest way to do it, but here is how i do:

replace the last arg (-output) of your command by this:

-outfmt '6 qseqid sseqid pident length mismatch gapopen qstart qend sstart send evalue bitscore qcovs qcovhsp'

And then with some kind of text manning tool, filter by pident and qcov:

awk '$3 == 100 && $13 == 100 {print}' outfile.txt > filtered_outfile.txt

Be aware of multiple hits for the same query, choose the ones that have the best evalue and bitscore.