I can help. Let me know how you want to do this (send me a list, let me look, etc) Generally speaking, iron flips are 2-3k, colored flips 1-2k and then good deeds are 50-75% of the value of the reward. So, if it's an agapite hammer deed that's plate (7 pieces including large), it would be 600k /7 pieces /2
I think your method undervalues some of the ring and chain bods due to ingot cost vs gold reward. Maybe we should trade.
For Ring and Chain, you're dividing by fewer pieces. There's also the matter of the 50-75% multiplier that I use for general desirability. I'd gladly go 75% on ring/chain but want 50% on plate.