Open mics + Looper + Live=Feedback?

["Christopher White" <magicicada@charter.net>]

hello all-i was wondering if you would mind answering a 
question for me-i have been using my repeater/dl4 live for 
awhile now with just one open mic that is inserted deep 
into my waterphone-recently i have been working on a 
project at home that involves 5 open mics and my mixer-my 
question is this: what possible problems should i look 
for? i do not want to get caught in a feedback loop.. i 
really do not want to compress my audio at all either as 
it fights against my  sound aesthetic quite a bit-any of 
you have some suggestions or stories to share?
thanks in advance
c.