So, generally, in most cases, I usually prioritize growth and income first, but if I'm going to play against a Castle or a Mage, and the map has all the necessary resources, especially crystals, I try to build creatures within a week, as they are the main offensive force. It works even better if the second unit is already built, because Behemoths require Wolf and Bird dwellings, which takes a total of 3 days. I build Cyclops last because they are expensive; they are mainly for destroying walls. The Mage Guild up to level 2: Lightning, Haste, Slow, Blind, Heal, and then go. Of course, before that, I increase the hero's attack.

Added 4 minutes later
The hero (Kreg Hag) should have: Attack, Defense, Ballistics, Tactics, Resistance, Leadership, Luck, and Wisdom.

Only very weak players build income structures at the beginning, and by doing so, you will lose to even mediocre players almost constantly. Even with a 200% income bonus, you shouldn't build more than a Town Hall, and if that building hinders the pace of the game (resulting in not being able to buy a hero for a chain or an army to break through), then you can do without it. It is worth building income in a captured neutral town or village in the first week (and even then, there are many nuances; sometimes it is more profitable to abandon building up your main Castle and switch to building units in a neutral town if, for example, that Castle is much stronger than yours, if it has external creature dwellings, etc.). If you have a lot of money and have managed to accumulate it, then you can immediately build troops in both Castles, or sometimes it makes sense to build magic in a newly captured secondary Castle. Why do only weak players build income at the beginning? Because good players immediately build an army, buy it, and use it to take money and resources from various monsters (including destroying (capturing) such income-generating structures in the early days of the game, such as Necropolises, Imps, and sometimes Gnomish Mines). They also buy many heroes (sometimes up to 8 in the first few days of the game), and they rush in different directions to scout and collect free money and resources, and some of them are used for efficient hero chains. As a result, in this way, you may have even more money at the end of the week than a player who went for income and bought only two heroes, but at the same time, you will have significantly improved your main hero, conducted extensive reconnaissance of the territory, which will allow you to know exactly where to go at the beginning of the second week, and at the beginning of the next week, you will be able to buy growth and either kill the opponent or increase your combat power, while your opponent will only start building an army in the second week (and you will still get more money in the second week by destroying such structures as Naga Banks, Medusa Lairs with your upgraded hero and purchased army, and managing to collect some of the free resources much earlier than your opponent due to the larger number of heroes)