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1) What's the situation with our health/mana potions? Considering the possibility of resurrection and healing, if we win, we'll need them first, meaning a warehouse. Alternatively, a hospital.
2) If not, I would consider a scout and an outpost, because we should always expect tricks from Revenant. A tavern is also a good option.
3) Everything else can be considered after the quests, if we need equipment/something breaks/we get an overflow/earn more money.