Would it be possible to make a custom vender to sell all the seeds instead of just giving a box to the player upon completing a quest? I mean, once you complete the quest up to the point of getting the box you instead get a quest to find the farming vender.
As a suggestion for replacing the workstations: couldn't you do the same thing through the quest system? Basically, the animals will give you "quests" whereby if you meet the requirements you get the item or pregnant version of the animal. There's a perk in-game whereby if you have a revolver out it will lower the prices; couldn't