The farming is less micromanagement then the normal vanilla df farming. Because its standardized, all seasons below ground (no micromangement at all) 2 seasons to plant above ground (spring, summer). It does produce way less, but then again no one uses fertilizer, and this might chance. But between farming fields, breeding animals, eggs, butchering invaders, getting food from inorganics (cave fungus and living rock), fishing, hunting, fish-pond, praying for food, caravans and the Nofood/nodrink effects from good biomes or special songs from the music stage... I would say you dont have to starve, if you dont want to.
Kobold loot has been fixed in V.2d. Thats why its not in the Changelog for V.2e. It already works.
Orcs have the sieger tag, they will wait 1-3 months before they might attack. Thats by design, same AI as humans have. Blocks trading and surface access.