I've been playing through Terraria again after forgetting to back up my previous (endgame) character and world. It was a good run with my old character and world though.
Also, my Jungle is literally right next to a Crimson. It's going to take some time to weed out all of the crimstone that's hidden in the mud while digging deep/big enough pits for the Jungle. Hardmode preparations take the most time.