Just to add this - I have many agents running in this combination, some on RHEL, some on AIX, with WebSphere 8.5.x and Java 1.7.x and 1.8.x
Generally from personal experience I would use AgentNoRedefNoRetrans.jar and IntroscopeAgent.NoRedef.profile , I had success with the regular files in WebSphere 7.0 versions and Java 1.6 but when we moved to WebSphere 8.5.5 and Java 1.7 (or 1.8) there was some java native heap issues using the Agent.jar and IntroscopeAgent.profile that vanished as soon as we went to the NoRedef versions and have been stable since then.
Going to those uses the "-typical" pbd's - If you are wanting to monitor anything that is coming from the "-full" ones (or previously were in dashboards etc) , you may need to take a look at some of the settings in the pbd files.
Thanks
Lee