Redoing Entire UI

[Zokudu]

So with the release of 3.0 I have decided to redo my entire UI. So while I wait for the patch to download (utorrent>Blizzard Dowloader) I went through the 3.0 Survival guide for some ideas on addons.

Heres what I'm planning: Black panel along bottom. Chat box on left side combat log on right side. Bars to the right of the chat log. Minimap to the right of that. Blank space? Maybe a damage meter to fill the rest of the space until my combat log. Unit fromes centered above black panel at the bottom. Then scrolling combat text some buff bars and a FuBar at the top. Pretty basic I tend toward functional but not crowding the screen.

So the addons I was planning were:
Bartender4
Chatter
Classtimer
Combuctor
eCastingBar
EBB
eePanel
Examiner
FuBar+Some plugins
HitsMode
MSBT
Omen
Mapster
TomTom

Now thats all well and good but you'll notice I'm missing a few things. First is a UnitFrames addon. I need a lightweight one and I dont know whcih to choose. Any suggestions?

Next I need a tooltip mod. I dont know any of them to be honest. Any suggestions.

Also I run a very low end pc. Do any of the above addons run heavy at all? If so is there a lighter alternative?

About ClassTimer and OmniCC will these addons clash? I dont think so so I think I may also add OmniCC

And finally (hopefully) I need a minimap editor. Which one would you suggest. Lightweight is important remember.

Oops I forgot a damage meter. I'm leanign toward Violation because its simple and I dont need all the functionality of Recount. Is there any issues with choosing Violation over the alternatives?