[Vedran]

And there are more Item Upgrade mods? I know only of Weimer's one.

Opinions are divided. Darkest Day brings a lot more into the game: quests, NPCs, kits, areas, items, spells... On the other hand, it is buggy (they're patching it to no avail), most kits are unplayable, it is buggy, some items and spells are highly overpowered, quests are buggy, some things are either dumb or not at the level of quality as the original game. And have I mentioned that it's buggy?

I have version 1.008 and the ReadMe says that Imoen romance is compatible with most mods, but the conflict is possible with dream shortcuts.
Nalia's Romance is compatible, just install THIS mod AFTER the aforementioned.
Since this mod partially replaces the second level of Irenicus dungeon, some of Weimer's Improved Ilyich mod (part of the Tactics) isn't fully functional.