Baldur's Gate + ToSC was already done as
Baldur's Gate Reloaded for Neverwinter Nights 2, and they're currently working on BG II: SoA Reloaded. They aren't being sued, nor were they issued any cease and desist letters so do whatever you want. Follow their format "Disclaimer: non-profit fan made / Important: buy the original / Originally developed by.." and you should be fine.