They're a great community fish, there is a guy on here that sells Apistogramma Trifasciata, they are personally one of my favorite fish and are beautiful. If you do want some apisto's I wouldn't probably keep more than 1 male to 2-3 females though, unless your tank is heavily planted to create some complexity for them to escape from each other.
Also I have kept rams with bristlenoses with no problems at all, rams are peaceful and the bristlenoses never do any damage to them other than chase them away if they get too close.
http://www.trademe.co.nz/pets-animals/f ... 103448.htm