Yeah I'm sure you will . If you have any questions, feel free to ask in the question thread or create a topic for your question.
After all, even the greatest start off from the beginning and sometimes ask the most questions, hence the existence of the question thread.
As for what I'd say since you reached floor 204 and level 98. I'd say just keep floor climbing until floor 500, but on very easy mode. Why?
You'll get some amount of high rarity crystals on the way since tier rarity increases per floor and the same with mythstones so you have a higher chance on getting valuable mythstones.
Not only that but you'll get some powerful legends that you can still get on the easiest mode such as Aether Wrap and Aether Hat with ED% and even the Mythical Helm/Weapon for easier mythstone findings due to Mythical Set affix as well as Scoundrel Swords with WD% on it.
100% ED is very important after all for a majority of builds and in the meantime climbing floors, you'd get some amount of Fortune Mythstones which you can save up for a farm build with Item Drops and higher rarity mythstones you ought to keep as well as Quest stones for Exp farming.
Also a chance to find a couple of amethyst's , rubies and obsidians for adding legend affix, crystal affix or set affix and to help save up for future builds.