Micrphone recomendatios sought

Your advice would be appreciated:  I plan to commence recording some
meetings.  The meetings will consist of singing accompanied by piano
followed by a talk.  The recording device will be a Del Latitude fed
from a Behringer 1204 thru a UCA202.

Thus far every microphone I have plugged into the Behringer gives,
insufficient signal.  With the faders at max I seem to barely have
enough sound.

At this point I am thinking of three mic.'s  I could go to four if
that would be better.

Thanks

Adrian