Hey, welcome to PPG.
A day or so before this fight, Sola talks to you about a vision he gets in his dreams. If you tell him that no, he's just dreaming, and it's nothing important, then that horrible fight will not happen *at all*. You may have to load an earlier save for that, because you _have to_ get this talk. If you don't have an earlier save, then tough luck - you'll have to sit it out. Setting the game difficulty to easy and/or CLUAConsoling some uber-weapons may help. Also, read the mod docs for strategies.
Imprisonment/Freedom generally works fine on all mod characters. It breaks Bioware romances intentionally, but not Sola's.