With a great store and a skilled employee with a lot of experience, could the ram and ssd be replaced by using a solvent dissolver to remove the pieces, and a glue to put the new ones in?

Samsung makes a 2tb and 4tb internal SSD. https://www.amazon.com/dp/B078DPCY3T/ref...

Make sure you’re backing up your system to either an external drive or backblaze since you’re storing so many valuable files. Keeping it all in once place is an easy way to lose it should your drive fail or your computer need to be reset. I’ve lost all the info off my mac twice due to it needing to be reset at apple.

I see only 6 steps. Am I missing something?