s&r is pointing you in the right direction with Thomann ! Check their site out - LOTS of kit all at sensible prices , good delivery times and delivery chrage is ONE charge per order , so VERY reasonable . I
hate to agree with an Anonymous Guest , but spare channels are indeed a good idea , though a twelve maight be a bit OTT !!
A couple of years ago we got a set of SM58's and boom stands for our trio at a total cost of about ninety quid a head - inc delivery !!