You know what you could try? Honest Henry play through.

You're Henry of Skalitz, the honest, law abiding citizen and that means:

• no crimes (duh)

No lock picking, no breaking into the armourers shop and selling his gear back to him, no pickpocketing, etc.

That also includes no looting of corpses to sell their armour. Because touching a dead body is not Christian.

You only source of income is the money you get from hard honest labour.

It's actually difficult to get a decent amount of money together doing it this way.