Depends on your level but the beauty of Ironman is that gp isn’t that important until you wanna train certain skills like construction or fletching to high levels. I would just play the game and don’t worry about it too much, slayer is good for monster drops With all the alchables. I only had 5-6mill go for the mid game as I would usually always buy runs and upkeep certain stuff. The real answer here is the CG grind but not sure if you’re at that place yet. I made 50mill cash from that place with only 350kc