Hi all,
Finally got my Mac Mini Server not too long ago, and I did try Logic on Lion Server without any of the server components. Its performance was blindingly good, but there were too many plugins that just would not work (none of the Arturia and NI plugins, which are the bulk of the ones that I use, variously would not work, install or authorise), so Lion Server was not an option.
Fortunately, using a MacBook Pro, which was running 10.7.3, I made a USB installer for Lion that worked perfectly on the Mac Mini; installation was a breeze. I am now up and running with the client version of Lion, still have the stellar performance that I need, and most of the plugins work (all of the most updated Arturia and NI plugins are fine).
I haven't upgraded the memory yet, and I'm already impressed.
Many thanks to all who replied.
J