4.1 ghz quad core? You could probably run Essentials without lag on just one of those cores... I need to start saving up to get me a new desktop. After I get a car. Anyways, I'll be around here most of today I think, so I should be able to get some more stuff done on your project (finishing a couple little things for Atomic Reactor at the moment).
Oh, and almost forgot. I did work on that analysis tool for Essentials, but my machine is far from capable of running the more reasonable iterations of it (I re-wrote probably 4 different version of it). Some of the less useful ones just slow it down to 1fps, others cause the script hanging error, since RMXP doesn't like waiting too long for something to run. So in RMXP, it's not really reliable.