Any good mods that are compatible with it? Also, any portrait pack recommendations?
The are only a few mods strictly and assuredly compatible with it: The in-built editor mod, a portrait pack improvement and the bug fix compilation required as a prerequisite. Some others might be more or less compatible, but I can't really say which, how much and in which combination. Besides, Aric's changes enough as a more or less overhaul, that throwing together mods without experience is more likely to hurt than help. If there's some particular one you're wondering and have done a bit of legwork to gauge (search bar top right here and on the mod's discord help a ton), the mod Discord can probably help you a lot better than I in any honesty could.
Itch.io link:
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Modpage link:
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Those should have most info and further up-to-date links you need.
Also, while most art packs should be compatible with the correct file path and naming, I'm myself on the lookout for a good one, if you happen to find (or make!) one, be sure to post a link!