Never played Baldur's before
The Baldur's Gate III will come out in a year or two, so I've decided to play all of the games before. It will be a long journey, I want to finish all of Baldur's and Icewind Dales. I never finished any of Baldur's games. I play a lot of D&D 5e with friends and I read some Drizzt books and Icewind Dale trilogy. I know it will be a long journey, so I wanted to ask a bunch of question before I start, to have the best start. I read a lot of information out there, but it got me even more confused, so to start with.1. Picking class
I read about broken combos etc. and honestly I kinda like the concept. I want to play with companions, not solo and I have 2 picks that got me interested, maybe someone can help me pick between those two.
Fighter/Thief or Gnome Fighter/Illusionist?
I kinda like the concept of doing a lot of dmg while backstabbing, so is it better to stick with fighter/thief? Do people pick fighter/mage mostly for buffs? If yes, then I can have other party members to cast them on me, right? Or maybe there are some other grounds why people pick Fighter/Mage
Fun fact - Artemis Entereri was Fighter/Thief, so maybe it might be fun to roleplay.2. Dual class or multiclass
I do understand how it works and what conditions you need, but how painful it is actually to dual-class Fighter/Thief? A thief has exp boost compare to other classes, right? Also, not sure how much you lose from multiclassing in this case.3. Companions
Ahhh the struggles, there are so many of them. I've seen some pools of most liked companions (I know, it's a weird approach of picking allies), and a lot of them were evil and I m intrigued to run them, if they are interesting. So, my question is there a way to be 'neutral'? Not a hero, not a true villain. Will composition, for example, Minsc, Edwin, Viconia, Jan, Imoen will fight each other all the time because of the different alignments? Also, having people like Viconia or Edwin does make my reputation already bad and I will struggle walking through a city or is possible to keep them neutral?4. Mods
I know most opinions are if your playing for the first time you don't need any mods, but...
I've seen something like 'Lefreut's enhanced UI' and maybe it's worth installing? Does it improve some quality of life? Couldn't find comparisons.
Also, is there a way to have the old cutscenes, instead remastered in BGEE?
I realize that most of these questions are ridiculous for someone who never played BGEE, but maybe someone can help me with my concerns and share experience, thanks!