Start the game with a minimum of 12 strength.Talk to Guildmasters to get easy 300exp.You can get to level 5-8 and over $4000 within 5-10 game days just from exploring areas in Westeros. Each area can give up to 800xp and most have a hidden chest with valuable items.
Outside of that, you can farm renown and honor by donating money in random events. Completing the first 4 easy quests should give enough renown to start recruiting. Most of this guide applies to all versions after ACOK 4.1 but this is written specifically around ACOK 7.1. This guide details the FASTEST way I have found to level up, make money, and be able to run around the map with out being scared of your shadow.
I really enjoy the quests, lore and gameplay of this mod but I find it most enjoyable after the early game grind. Renown is required to hire units from villages and if you can't hire units it's very difficult to solo the bandit parties in the early game.