How to set up a heavy forwarder in a non-production indexer clustering environment for Monitoring of Java Virtual Machines with JMX?

I was wondering what everyone was doing when needing a Heavy Forwarder in a clustered lower (non-production) environment. I currently have a user that wants to utilize the SPLUNK4JMX application. I did some reading and saw that the best way to do this in a clustered environment is to utilize a heavy forwarder. I suspect the reason is so that as we need to make changes to the JMX endpoints to use, it is easier to modify the HF than a cluster master. My question would be, what would be the best way to execute this in our lower environment? I don't have an extra server, so would I install the HF on a server that houses one of my other components? Would it just make sense to just install on the cluster master since I don't have a free server to use? Thanks!