Äh - do nothing?
Talking about software. Seriously.
I feel like I have most of the
background tasks minimal so I can get
the full use.
What is the sense behind it? I mean, seriously - you want full stack performance, DO NOT USE THE SYSTEM INTERACTIVELY. Servies normally do not use a lot of CPU anyway unless used.
What utilities can I run to help get a
bit more juice out of my machine?
There is the one called "credit card". Get a faster disc, more memory, faster CPU.
Software wise - try overclocking.
Besides that there simply is no need to tune at all to start with.