A question with installation, about one particular tactics component Options

[Silverstar]

OK I never had the chance to play v5 so I plan to give it a try in the next weeks.

I know I should not install any other difficulty enhancing mods...I have few components from tactics and improved battles which worked fine with V4 in my last game. Will they cause any problems? Namely, unique encounters such as poison avatars, the ritual quest, Bodhi, Maevar, etc.

Bu I also love one particular component of tactics mod and am asking if I can keep it, if so, how?

It is improved undead...it enables all undead critters to have some minor spell like powers...shadows, zombies cast low lvl stuff such as spook, doom, blindness, etc. while higher lvl undead (greater mummies) cast deadly stuff like Finger of Death or Wail of the Banshee.

If I install IA after this component, I noticed undead stopped using their abilities. If I install this component after IA (I know, Sikret, you strictly forbid us to install any other mod after IA) and start a new game, undead work fine. Imoen comes as a gothic sorceress as well, and item randomization program works without problems. (so the message says me) So, I am thinking will it work without problems?