2013 great white tank, five years BOOM!!!!!!!!!!!!!!!!!

I was one of the lucky few to get a Sheldon compressor , Its a kick ass garage compressor , I fill my little Venturi foot ball tank 2015 date, from my great white and then fill my guns from there,
Now I am not so much a safety nut, but I go to a tank place that deals in the big tanks and ask about a 5 year safety test on my 4500 psi carbon fiber great white
The guy said sure we can test it and have back to you in a week. 250.00 dollars. WTF So I am a cheap ass , What to do?????????????????????????
I do not think my tanks are going to blow up, For that kind of money I can buy an extra water filter and have two of them in a row , Thats the BIG deal on the tanks is keeping them dry, Right? My tanks live indoor in my home office in a dark closet.
Am i in danger , or should I suck it up and get them tested,
I am setting here right next to my little ventui tank and the gauge reads 5000 psi, Oh I love the sheldon compressor .
The great white sets behind the door reading about 4800 psi.
A little history on my tank, before I had my compressor the oilfield company used to charge me 38 dollars to fill my tank, Or even to top it off same price 38 bucks, Now they did fill to 5000 at my request so when I got home it would read 4800 or 4500 depending on the rate of fill.
They did not fill in a safety box just on the bed of my truck, I ask about the safety box for fills , One of the guys that spoke pretty good English came over and said , This is one of the finest quality tanks we come across , The gauges alone are some of the best we come across, Just stand back and let us do our job…
Now that was some pretty high praise in my book.
I would like to know what the all knowing that all knowledgeable master of oz , and the genies that reside in the black boxes have to say :whistle:
Mike