Best way to store cards

Hey all,

I'm almost done completing a set and wanted everyone's thoughts on how best to store the cards. It's worth noting that I potentially may be looking to store and keep the cards for many (10+) years, although I suspect I'll fold and end up selling before that.

I've currently got a Go! SuperPro Premium Toploader Folder, that holds 9 cards per page. Each card is in a penny sleeve and in a VaultX Rigid Toploader. Pics of all of these attached.

The binder looks aesthetically pleasing and the colours of the cards come through well.

My question is, is this suitable for long term storage? Do I need to take any considerations around humidity, temperature etc.? Do I need to look out for warping?

Is there anything I should be doing differently?

And lastly, when it comes to selling: is it better to sell individually or as a set? I know that usually there's more to be made individually, but shadowless sets in good condition don't come up very often, so unsure if it'll attract a premium.

Thanks everyone!

PS – if you have shadowless cards for sale in nice condition, please reach out. I have about 17 left to complete the set!