thanks guys for all the advises, it's great and will give it a shot. I will finally understand who's this guy "minsc" that you've been talking about.
I would play through it in Neverwinter Nights 2 engine if I were you, Baldur's Gates engine imo did not pass the test of time.
ah ! Just when I thought - ok I got this - I see that curve ball coming. I did some digging and NWN2 can run baldurs gate 1 & 2 with a mod name "reloaded". Is it what you are referring to ?