Great post, didnt have time to read it till now or reply, my story's a typical one although, reason i mainly stack is I don't trust the system. I Don't stack for weight solely, more cheapest semi numismatics.
As it works for me and I'm used to buying and selling something. I've done it all my life so seems logical to try do both and grow my stack at same time. I Try to be selective and stick to my criteria and 3 years into a five year setup plan.