I haven't tested with SK, but it should work just fine for hunting and forestry as long as any added content is properly added to the biomes.
As for production, as long as it uses recipes, bills and can be built on a workstation (stove, smelter, etc. etc.) it should work just fine. I went from vanilla to the MVP modpack without any issues.
The mod only adds a few small things, and doesn't modify anything - there's very little that can go wrong in terms of conclicts. I just check what's there (loads all recipes, workstations, etc), and then use that to do the magic. If it works with the vanilla systems, it should work with the Manager.
Few exceptions are obviously custom buildings, for example MAI's robot assembler and the production line mod - they implement their own custom bill system.