Do you ever think to reevaluate your stack?

I dont have a huge stack but its a decent stack and it's mine. I have 145 different pieces according to my excel sheet, of course this number grows with every order and i have multiple's of most. This in time will make my exit plan very time consuming and difficult. I often think about what if i had stuck to buying my core coins, the 12 coins i stack every year religiously and cut out the rest, all the fun coins i buy just cause they look nice are, are new release coins that everyone else is getting them so i have to get some too. What if i sold everything i have except for my core 12? and used the money to reevaluate my stack into those 12 coins from years 2015+ I started stacking at the end of 2013, learnt from mistakes in 2014 and got more organised in 2015. I know if i did this, i would gain roughly 5-10% extra oz's in the process thought selling higher premium stuff and i would have a clean catalogued stack that would be easier and quicker to exit with. What if i just stacked one coin? No, that's too crazy to think about. 12 is a good number.

Core 12 - China panda, Congo gorilla, libertad, koala, Kookaburra, Perth lunar 1/2 oz, 1oz & 2oz, Somalian elephant, Uk britannia, Uk lunar series and finally kangaroos added in 2016.

Some may think that 12 is still to many but i stack these because everyone knows them, they are easy to resell and i enjoy watching the date runs grow every year. I would make some personal stack with my brit date run, SBSS coins and 1 offs for a big box under the bed, no more than 100 ozs.

The master plan is to stack my core 12 for 5 years. Then each year after i will flip the oldest coin and buy that years. So for example with my lunar 1/2oz coins that i buy 50 of each year. In 2020, i will flip my 2015 coins to buy 2020's, maybe sell 20 to buy back 23-24 and get my stack to become self-funding. Oz's over premiums. I plan this way as i would like to invest else where in a couple of years so the bulk of my pension is not in 1 pot, still have 30+ years to go so plenty of time. But the self funding thing is important to me, semi-passive pension fund with a few weeks of selling and buying each year. Nice wee pot off the rader away from the tax mans preying eyes.

Second thought, my new avg per oz would make me cry :(

Anyone ever thought of doing something like this are has done it? It seems like a good plan but it maybe boring not getting those 1 offs, the spice to the stack, Any thoughts?
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