Awesome stuff Leo - this will be fun. You are right about me being hesitant to use Sacrifice, I completely missed it in my first game and in the second I tried it once, and sent my troop into a murderous rage for being over cap. So I don't know how to use it effectively. But I will try when I find the spell.
Things are going very smoothly so far (day 2 - level 4). My strategy at the moment is very simple. Three ranged units (Thorn Hunter, Archer, Priest), a stack of Swordsmen who usually do nothing but occasionally deliver a coup de grace, and most importantly a stack of 4 Horsemen. Horsemen are VERY strong in the early game which is probably why they aren't really supposed to be available, except by the trick of getting past the king's tent guard that someone worked out weeks ago. I think there are 13 Horsemen in the tent so I need to make sure I don't lose any.
I am still spamming Fireball at this early stage. This is a great strength of the Mage, who starts with Fireball without access to Chaos magic as yet. All I do is fireball whatever looks weakest (it's great on Thorns - they take double damage from fire) and then attack strategically with the Horsemen. And the Priests are perfect for Blessing/Healing the Horsemen. With this strategy, and only taking on enemies that are listed as Slightly Weaker or below, I have virtually ZERO losses. Sometimes against a somewhat harder enemy I will lose a couple of archers or a swordsman. And I am up to 25,000 gold already which is a lot for this early stage. There is plenty to do in Darion while you are still weak, and I know the continent so well now that I know which enemy stacks and locations are too hard for me.
This is great fun.