Yes if you are a gold or diamond supporter you can own a res in utopia and go to the endeartopia and mine in the waste or build in the wild.
First congrats on gold! I can still remember how excited I was when I first got supporter status, so yeah I hope you'll have lots of fun with this! As the others said: try Utopia! If you like mining then you'll love mining on Utopia. For starters: its always light (so hostile mobs rarely spawn) and no fall damage! Check out the Utopia wiki page for more info. I even wrote a review on the whole thing here: https://empireminecraft.com/threads/guide-shells-utopia-review.64853/ Hope this can help a bit But most of all I hope you'll have a lot of fun! Oh: and welcome to Shell Chat (next to Town (t), Economy (e) and Local (l) chat you also have Supporter chat (s). It's something only seen by supporters. Of course, I like the name Shell Chat much better ).