>>45557757Stopping at one of each art definitely saves you a lot of time and money.
I'd still advice you to double up on base set art because pic related with all the slight differences would have a good contrast with your oversized card.
It's also both cheaper and rarer than the base set version.
As for sleeving your cards it's up to your preference.
Dragonshield is one of the best brand. They're known mostly for how durable their sleeves are, they're also slightly larger than most other brands so you don't have to worry about them being too tight.
