Optimising Macs - Tweaks, Control pan. ext drivers limos Options

[graham_k100]

With Apple taking over emagic, i've decided to take the plunge and switch from a pc to a mac.

With PCs, it always made sense to get a system built by audio specialists, but surely this isn't necessary with a Mac?

Does anyone have a standard list of tweaks that I should make with extensions manager to optimise my system, or is it worth paying a premium to get an audio specialist supplier to do it for me?

(I'll be running Logic 5 with a logic controller & a MOTU 2048)

Thanks