Hi,
I found out that if you somewhere around 65-71, Stouty is the best mob to hunt for more gold.
As there are usually 4 Stouties around BM middle, no need to wait for it to re-spawn.
Stouty normally drop +1 - +3 and I used to npc them.
The highest npc that I have is about 900K.
With 1 trip of pot, I usually make 1m..
You could try it out.
DM