[h2oya311]

Adam -

First of all, welcome to the board! That sounds so awesome to get to go through all those cards again. Most of the collectors on this site love the raw stuff, so I'm sure if there are some doubles of raw, good to EX condition cards, you will find plenty of interest.

For rare and/or popular cards (like the Red Heart Mantle), if you plan on selling, then get them graded by PSA. An annual membership costs a fair amount (~$100), but you get some "free" grading submissions, and this might be an opportunity to drop a few of the nicer cards off with them to grade.

Since most are "collector grade", I definitely think you should enjoy them in all their cardboard glory without adding the plastic tomb around them, especially for the ones you want to keep / continue collecting. I bet someone would be willing to do some trades to help you complete your sets. This forum is awesome for that sort of stuff!

Best of luck and congrats on the "re-find".