Tm vsr 10 g spec upgrade to 500fps

[KOBK81]

I've been trawling the net and it would appear that there are so many different variations when it comes to upgrades. Everyone has a different method. I've devised a selection of parts based on my research and i woukd like to find your opinions on my choices

Action army trigger box+piston

Laylax spring guide

Maple leaf stainless cylinder

M150 spring

Pdi hop chamber

Maple leaf macaron 60 deg 

Zci 6.02 barrel 

I'm going to diy the barrel stabilisers

Your opinions will be welcomed