BG:EE mods; I'm stupid and I need help

Hey guys, I was just a little Bhaalspawn when I fell in love with this series. I've played it for decade but when it comes to mods I am like a... Let's just say I'm computer illiterate person. :) Never actually tried any mod (shame on me) and I'd like to. I've seen few topics that helped me a little but I'm affraid that's not enough.

First of all...
What's WeiDU and is it essential? Are there any mods that don't require it?
Is there any "one-click-install-manager"? You know... like Morrowind/Oblivion/Skyrim Mod Manager.
Can anyone recommend good mods that are compatible? Most informations I've found are outdated and I don't want to mess it up (for example this topic).
That BG vs. BG:EE thing is another problem for me. Again, I don't know what's compatible.
Is there mod install order?

Things I'd like to have:
- More quests. Unfinished business? Is it up to date?.
- Subraces (Yeah, drows. So what? Shut up!). Probably this one?
- Some tactical element. Improved difficulty.
- Banter.
- AI.
- Maybe better character models? I don't get it. PS:T is older than BG2 and it amazes me how good PS:T looks compared to BG.

...
You know. Must-have mods.

Would you kindly help me with this? :)