Clustering to Mac Mini Server worth the effort?

Hi,
I am trying to export 6 x 1hr lectures, which I edited on my MBP 15" (16GB ram 500GB SSD 4TB TB LaCie), but the rendering is taking ages. I also have a "spare" Mac Mini Server. Is it worth trying to cluster the Mini to speed up Compressor?
I tried doing this and I followed the instructions in creating a cluster, but couldn't figure how to submit the job to the cluster - it only allowed "This computer".
Any suggestions?

I meant to put this in the Compressor forum, but ended up here by mistake. The Admin might wish to relocate it...

By the way, I can't find any documentation for Compressor 4 and clustering, only v3.

Help!

Almost found the answer! In FCPx, you have to Share to Master File and NOT Send to Compressor. You can then add the master file to Compressor and then select the cluster on Submit. The other way around, you can't!

- I don't seem to have the Mac Mini (cluster unmanaged participant) to actually be registered in the cluster. So I am still working on that